Inorganic Chemistry for JEE ADVANCED

Problem 1

Select the correct IUPAC name for

Narayan Hari

Numerade Educator

03:38

select the correct IUPAC name for
$$
\left[\mathrm{Mo}\left(\sigma-\mathrm{C}_{3} \mathrm{H}_{5}\right)\left(\pi-\mathrm{C}_{5} \mathrm{H}_{5}\right)\left(\mathrm{CO}_{3}\right)\right]
$$
(1) Tricarbonyl ( $\eta^{5}$-cyclopentadienyl) allyl molybdate(II)
(2) Allytricarbonyl ( $\eta^{5}$-cyclopentadiene) molybdate(II)
(3) Allyltricarbonyl ( $\eta^{5}$-cyclopentadienyl) molybdenum(II)
(4) Allyl tricarbonyl ( $\eta^{5}$-cyclopentadienyl) molybdenum(II)

Vasu Makani

Numerade Educator

Problem 3

cant copy question

Narayan Hari

Numerade Educator

Problem 4

cant copy question

Narayan Hari

Numerade Educator

Problem 5

cant copy question

Narayan Hari

Numerade Educator

Problem 6

cant copy question

Narayan Hari

Numerade Educator

Problem 7

cant copy question

Narayan Hari

Numerade Educator

Problem 8

cant copy question

Narayan Hari

Numerade Educator

Problem 9

Coordination number of calcium is six in:
(1) $[\mathrm{Mg}(\mathrm{EDTA})]^{2-}$
(2) $\mathrm{MgC}_{2} \mathrm{O}_{4}$
(3) $\left[\mathrm{Mg}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{2}\right]^{2-}$
d. $\mathrm{MgSO}_{4} \cdot 4 \mathrm{H}_{2} \mathrm{O}$

Raghvendra Singh

Numerade Educator

03:16

Problem 10

Coordination number of $\mathrm{Cu}^{2+}$ in $\mathrm{CuSO}_{4} \cdot 5 \mathrm{H}_{2} \mathrm{O}$ is
(1) 5
(2) 4
(3) 3
(4) 2

Aswathy M

Numerade Educator

03:01

Problem 11

The closed ring compounds formed by bidentate ligands, on binding to a metal or metal ions are called:
(1) Monodentate
(2) Chelates
(3) Ambidentate
(4) None of these

Aswathy M

Numerade Educator

Problem 12

Which is the pair of ambidentate ligand?
(1) $\mathrm{CN}^{\Theta}, \mathrm{NO}_{2}^{\ominus}$
(2) $\mathrm{NO}_{3}^{\ominus}, \mathrm{SCN}^{\Theta}$
(3) $\mathrm{N}_{3}^{\ominus}, \mathrm{NO}_{2}^{\ominus}$
(4) $\mathrm{NCS}^{\Theta}, \mathrm{C}_{2} \mathrm{O}_{4}^{2-}$

Hunza Gilgit

Numerade Educator

02:57

Problem 13

Number of water molecules acting as ligands in $\mathrm{CuSO}_{4} \cdot 5 \mathrm{H}_{2} \mathrm{O}$, $\mathrm{ZnSO}_{4} \cdot 5 \mathrm{H}_{2} \mathrm{O}, \mathrm{FeSO}_{4} \cdot 7 \mathrm{H}_{2} \mathrm{O}$ respectively are
(1) $5,5,7$
(2) $4,5,4$
(3) $4,4,6$
(4) $4,4,7$

Emmalou Schmittzehe

Numerade Educator

00:56

Problem 14

Select the correct IUPAC name for
$\left[\mathrm{Pt}\left(\mathrm{C}_{5} \mathrm{H}_{5} \mathrm{~N}\right)_{4}\right]\left[\mathrm{PtCl}_{4}\right]$ complex:
(1) Tetrapyridineplatinate(II) tetrachloridoplatinate(II)
(2) Tetrapyridineplatinate(II) tetrachloridoplatinate(II)
(3) Tetrapyridineplatinate(II) tetrachloridoplatinum(II)
(4) Tetrapyridineplatinum(II) tetrachloridoplatinate(II)

Hast Aggarwal

Numerade Educator

Problem 15

Select the correct IUPAC name for $\left[\mathrm{C}_{4} \mathrm{H}_{4} \mathrm{Fe}(\mathrm{CO})_{3}\right]$ complex:
(1) $\eta^{4}$-cyclebutadiene tricarbonyliron(0)
(2) Tricarbonyl ( $\eta^{4}$-cyclobutadienyl) iron $(0)$
(3) Tricarbonyl ( $\eta^{4}$-cyclobutadiene) iron(1)
(4) Tricarbonyl ( $\eta^{4}$-cyclobutadiene) $\operatorname{iron}(0)$

Hunza Gilgit

Numerade Educator

02:33

Problem 16

Oxidation state of " $\mathrm{V}$ " in $\mathrm{Rb}_{4} \mathrm{~K}\left[\mathrm{HV}_{10} \mathrm{O}_{28}\right]$ is
(1) $+5$
(2) $+6$
(3) $+\frac{7}{5}$
(4) $+4$

Dr. Satish Ingale

Numerade Educator

02:20

Problem 17

Coordination number of $\mathrm{Cr}$ is $\mathrm{six}$. A complex with $\mathrm{C}_{2} \mathrm{O}_{4}^{2-}$ en and superoxide $\mathrm{O}_{2}^{\Theta}$ will be in the ratio to make complex $\left[\mathrm{Cr}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{x},(\mathrm{en})_{y}\left(\mathrm{O}_{2}\right)_{z}\right]^{\ominus}$
(1) $1 \quad 1 \quad 1$
(2) $1 \quad 1 \quad 2$
$\begin{array}{lll}\text { (3) } 1 & 2 & 2\end{array}$
$\begin{array}{lll}\text { (4) } 2 & 1\end{array}$

Alkendra Singh

Numerade Educator

01:29

Problem 18

The compound $\left[\mathrm{CoCl}_{3} \mathrm{I}\left(\mathrm{C}_{5} \mathrm{H}_{5} \mathrm{~N}\right)_{2}\right] \mathrm{Br}$ will show the chemical test for which of the following ions?
(1) $\mathrm{Br}^{\odot}$
(2) $\mathrm{Cl}^{\ominus}$
(3) $1^{\ominus}$
(4) $\mathrm{Br}^{\Theta}$ as well as $\mathrm{Cl}^{\Theta}$

Hunza Gilgit

Numerade Educator

02:11

Problem 19

The correct IUPAC name of $\left[\mathrm{Mn}_{3}(\mathrm{CO})_{12}\right]$ is
(1) Dodecacarbonylmanganate(0)
(2) Dodecacarbonylmanganic(II)
(3) Dodecacarbonyltrimanganese $(0)$
(4) Manganiododecarbonyl $(0)$

Aswathy M

Numerade Educator

Problem 20

The correct name of is
(1) Tri- $\mu$-carbonylbis(tricarbonyl iron(0))
(2) Hexacarbonyliron(III) $\mu$-tricarbony Iferrate(0)
(3) Tricarbonyliron $(0) \mu$-tricarbonyliron(0)
(4) Nonacarbonyl iron

Narayan Hari

Numerade Educator

Problem 21

The correct IUPAC name of the complex: is
(1) Dichloridodimethylglyoximatocobalt(II)
(2) Bis(dimethylglyoxime) dichlorocobalt(II)
(3) Dimethylglyoximecobalt(II) chloride
(4) Dichloridodimethylglyoxime-N,N-cobalt(II)

Maryam Riaz

Numerade Educator

Problem 22

The correct IUPAC name of $\left[\mathrm{AlCl}_{3}\right] \cdot 4(\mathrm{EtOH})$ is
(1) Aluminium(II) chloride-4-ethanol
(2) Trichloridoaluminium(III)-4-ethanol
(3) Aluminium(III) chloride-4-hydroxyethane
(4) Aluminium chloride-4-ethanol

Narayan Hari

Numerade Educator

01:31

Problem 23

In octaamine $-\mu$-dihydroxodiiron(III) sulphate, the number of bridging ligands is
(1) 2
(2) 1
(3) 3
(4) None

Hunza Gilgit

Numerade Educator

Problem 24

The IUPAC name of the complex having formula $\left[(\mathrm{CO})_{3} \mathrm{Fe}(\mathrm{CO})_{3} \mathrm{Fe}(\mathrm{CO})_{3}\right]$ is
(1) Monocarbonylferrate(0)
(2) Tricarbonyliron $(0)-\mu$-tricarbonyliron $(0)$
(3) Tri- $\mu$-carbonylbis- $\{$ tricarbonyliron $(0)\}$
(4) Hexacarbonyl- $\mu$-tricarbonyliron(III)

Narayan Hari

Numerade Educator

00:32

Problem 25

A group of atoms can function as a ligand only when
(1) It is a small molecule
(2) It is capable of acting as donor of electron pair
(3) It is a negatively charged ion
(4) It is a positively charged ion.

Hunza Gilgit

Numerade Educator

02:46

Problem 26

Which of the following is most likely structure of $\mathrm{CrCl}_{3}-6 \mathrm{H}_{2} \mathrm{O}$ if $1 / 3$ of total chlorine of the compound is precipitated by adding $\mathrm{AgNO}_{3}$ to its aqueous solution?
(1) $\mathrm{CrCl}_{3} \cdot 6 \mathrm{H}_{2} \mathrm{O}$
(2) $\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{3} \mathrm{Cl}_{3}\right]\left(\mathrm{H}_{2} \mathrm{O}\right)_{3}$
(3) $\left[\mathrm{CrCl}_{2}\left(\mathrm{H}_{2} \mathrm{O}\right)_{4}\right] \mathrm{Cl} .2 \mathrm{H}_{2} \mathrm{O}$
(4) $\left[\mathrm{CrCl} \cdot\left(\mathrm{H}_{2} \mathrm{O}\right)_{5}\right] \mathrm{Cl}_{2} \cdot \mathrm{H}_{2} \mathrm{O}$

Himanshu Kushwaha

Numerade Educator

02:07

Problem 27

The coordination number of the central ion may be obtained from
(1) The number of ionic bonds formed with the surrounding ions
(2) The number of coordinate bonds formed with the surrounding atoms
(3) The number of ions of opposite charge immediately surrounding the specific ion
(4) None of the above

Hunza Gilgit

Numerade Educator

Problem 28

Which of the following is nonionisable?
(1) $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{3} \mathrm{Cl}_{3}\right]$
(2) $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{Cl}_{2}\right] \mathrm{Cl}$
(3) $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{5} \mathrm{Cl}\right] \mathrm{Cl}_{2}$
(4) $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right] \mathrm{Cl}_{3}$

Narayan Hari

Numerade Educator

Problem 29

Which of the following pair contains complex salt and double salt respectively?
(1) $\mathrm{FeSO}_{4}, \quad \mathrm{~K}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]$
(2) $\left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}\right] \mathrm{SO}_{4}, \mathrm{FeSO}_{4} \cdot 7 \mathrm{H}_{2} \mathrm{O}$
(3) $\left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}\right] \mathrm{SO}_{4}, \quad \mathrm{~K}_{2} \mathrm{SO}_{4} \mathrm{Al}_{2}\left(\mathrm{SO}_{4}\right)_{3} \cdot 24 \mathrm{H}_{2} \mathrm{O}$
(4) $\mathrm{MgSO}_{4} \cdot 7 \mathrm{H}_{2} \mathrm{O}, \quad \mathrm{CuSO}_{4} \cdot 5 \mathrm{H}_{2} \mathrm{O}$

Narayan Hari

Numerade Educator

02:19

Problem 30

In which of the following compounds the metal is in the lowest oxidation state?
(1) $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{5} \mathrm{Br}\right] \mathrm{SO}_{4}$
(2) $\mathrm{Fe}_{3}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{2}$
(3) $\left[\mathrm{Mn}_{2}(\mathrm{CO})_{10}\right]$
(4) $\mathrm{K}\left[\mathrm{PtCl}_{3}\left(\mathrm{C}_{2} \mathrm{H}_{4}\right)\right]$

Anatole Borisov

Numerade Educator

Problem 31

Which of the following can be termed as mixed complex?
(1) $\mathrm{K}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]$
(2) $\left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}\right] \mathrm{SO}_{4}$
(3) $\left[\mathrm{Co}\left(\mathrm{NH}_{2}\right)_{4} \mathrm{NO}_{2} \mathrm{Cl}\right] \mathrm{Cl}$
(4) $\mathrm{K}_{2} \mathrm{FeSO}_{4}$

Hunza Gilgit

Numerade Educator

01:08

Problem 32

The oxidation number of $\mathrm{Co}$ in $\left[\mathrm{Co}(\mathrm{en})_{3}\right]_{2}\left(\mathrm{SO}_{4}\right)_{3}$ is
$(1)+2$
(2) $+1$
(3) $+3$
$(4)+6$

Kajal Gautam

Numerade Educator

01:34

Problem 33

The IUPAC name for the coordination compound $\mathrm{Na}_{3}\left[\mathrm{Ag}\left(\mathrm{S}_{2} \mathrm{O}_{3}\right)_{2}\right]$ is
(1) Sodium silverthiosulphate(I)
(2) Sodium silverhyposulphate(I)
(3) Sodium bis[argentothiosulphate(I)]
(4) Sodium bis(thiosulphato)argentite

Lottie Adams

Numerade Educator

03:47

Problem 34

The IUPAC name for the coordination compound $\left[\mathrm{CuCl}_{2}\left(\mathrm{CH}_{3} \mathrm{NH}_{2}\right)_{2}\right]$ is
(1) Dimethylamine copper(II) chloride
(2) Bis(dimethylamine copper(II) chloride
(3) Dichloridobis(methylamine) copper(II)
(4) Dichlorobis(dimethylamine) copper(II)

Aadit Sharma

Numerade Educator

Problem 35

The IUPAC name for $\left[\mathrm{Al}(\mathrm{OH})\left(\mathrm{H}_{2} \mathrm{O}\right)_{5}\right]^{2-}$ is
(1) Pentahyroaluminium hydroxide
(2) Aquometaaluminate ion
(3) Pentaaquaaluminate(III) hydroxide
(4) Pentaaquahydroxoaluminium(III)

Narayan Hari

Numerade Educator

01:00

Problem 36

The IUPAC name for $\left[\mathrm{Pt}(\mathrm{Br})(\mathrm{Cl})\left(\mathrm{NH}_{3}\right)_{3}\left(\mathrm{NO}_{2}\right)\right] \mathrm{Cl}$ is
(1) Triamminechloridobromidonitroplatinum(IV) chloride
(2) Triamminebromidochloridonitroplatinum(IV) chloride
(3) Triamminnitrochlorobromoplatinum(IV) chloride
(4) Triamminechloronitrobromoplatinum(IV) chloride

Raghvendra Singh

Numerade Educator

01:14

Problem 37

The oxidartion number of $\mathrm{Cr}$ in $\left[\mathrm{Cr}\left(\mathrm{C}_{6} \mathrm{H}_{6}\right)_{2}\right] \mathrm{S}$
(1) 0
(2) $+2$
(3) $+3$
(4) $+6$

Narayan Hari

Numerade Educator

01:17

Problem 38

Which of the following has five donor (coordinating) sites?
(1) Ethylenediaminetriacetate ion
(2) Diethylene triamine
(3) Ethylenediaminetetracetate ion
(4) Triethylene tetramine.

Varsha Aggarwal

Numerade Educator

01:00

Problem 39

Which of the following is not chelating agent?
1. Thiosulphate
(2) Oxalato
(3) Glycinato
(4) Ethylene diamine

Hunza Gilgit

Numerade Educator

Problem 40

The solution of $\mathrm{AgBr}$ in presence of large excess of $\mathrm{NH}_{3}$ ontains mainly the cation.
(i) $\mathrm{NH}_{4}^{\oplus}$
(2) $\mathrm{Ag}^{\oplus}$
(3) $\left[\mathrm{Ag}\left(\mathrm{NH}_{3}\right)\right]^{\oplus}$
(4) $\left[\mathrm{Ag}\left(\mathrm{NH}_{3}\right)_{2}\right]^{\oplus}$

Narayan Hari

Numerade Educator

04:22

Problem 41

Which of the following species is not expected to be a ligand?
$(1) \mathrm{N} 0$
$(3) \mathrm{NH}_{2}-\mathrm{NH}_{3}^{\oplus}$
(2) $\mathrm{NH}_{4}^{\oplus}$
(4) $\mathrm{CO}$

Nicholas Mogoi

Numerade Educator

Problem 42

The number of donor sites in dimethyl glyoxime, glycinato, diethylene triamine and EDTA are respectively:
(1) $2,2,3$ and 4
(2) $2,2,3$ and 6
(3) $2,2,2$ and 6
(4) $2,3,3$ and 6

Narayan Hari

Numerade Educator

02:49

Problem 43

Which of the following is a double salt?
(l) Alum
(2) Chrome alum
(3) Microcosmic salt
(4) All of these

Sudhir Kumar

Numerade Educator

01:06

Problem 44

When potash alum is dissolved in water the total number of ions produced is
(1) Four
(2) Eight
(3) Ten
(4) Thirty-two

Narayan Hari

Numerade Educator

02:34

Problem 45

Which of the following statements is correct with regard to a complex ion?
(1) A complex ion consists of a central ion bonded to two or more donor ions or molecules, usually does not dissociate into simple ions or molecules even in a solution, and exhibits properties different from its constituent ions or molecules.
(2) The donor ions and molecules which coordinate with the central atom or ion in a complex are called ligands.
(3) The sum of the number of electrons present in the central metal ion or atom and those donated by the ligands is called the effective atomic number of the central metal atom and this number is usually the same as the atomic number of the next higher noble gas.
(4) All of these

Hunza Gilgit

Numerade Educator

01:49

Problem 46

How many moles of $\mathrm{AgCl}$ would be obtained, when $100 \mathrm{~mL}$ of $0.1 \mathrm{M} \mathrm{Co}\left(\mathrm{NH}_{3}\right)_{5} \mathrm{Cl}_{3}$ is treated with excess of $\mathrm{AgNO}_{3}$ ?
(1) $0.01$
(2) $0.02$
(3) $0.03$
(4) None of these

Vishal Sharma

Numerade Educator

01:16

Problem 47

$0.001 \mathrm{~mol}$ of $\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{5}\left(\mathrm{NO}_{3}\right)\left(\mathrm{SO}_{4}\right)$ was passed through a cation exchanger and the acid coming out of it required $20 \mathrm{~mL}$ of $0.1 \mathrm{M} \mathrm{NaOH}$ for neutralisation. Hence, the complex is
(1) $\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{5} \mathrm{SO}_{4}\right] \mathrm{NO}_{3}$
(2) $\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{5} \mathrm{NO}_{3}\right] \mathrm{SO}_{4}$
(3) $\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{5}\right]\left(\mathrm{SO}_{4}\right)\left(\mathrm{NO}_{3}\right)$
(4) None of these

Alkendra Singh

Numerade Educator

Problem 48

Among the following, select the order of decreasing EAN values
I. $\left[\mathrm{Cr}(\mathrm{CO})_{6}\right]$
II. $\left[\operatorname{Cr}(\mathrm{CO})_{6}\right]^{\ominus}$
III. $\left[\mathrm{Cr}(\mathrm{CO})_{6}\right]^{\oplus}$
$(1) \mathrm{I}>\mathrm{II}>\mathrm{III}$
(2) $\mathrm{III}>\mathrm{II}>\mathrm{I}$
$(3) \mathrm{II}>\mathrm{I}>\mathrm{III}$
(4) $\mathrm{II}=\mathrm{I}>\mathrm{III}$

Narayan Hari

Numerade Educator

01:44

Problem 49

Increasing order EAN of the metals in
1. $\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2-}$
III. $\left[\mathrm{Cu}(\mathrm{CN})_{4}\right]^{3-}$ is
II. $\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}$
(1) $\mathrm{I}<\mathrm{II}<\mathrm{III}$
(2) $\mathrm{I}<\mathrm{II}=\mathrm{III}$
(3) $1<\mathrm{III}<\mathrm{II}$
(4) $\mathrm{III}<\mathrm{II}<\mathrm{I}$

Hitendra Singh

Numerade Educator

00:43

Problem 50

EAN of $\mathrm{Na}\left[\mathrm{PtCl}_{3}\left(\eta^{2}-\mathrm{C}_{2} \mathrm{H}_{4}\right)\right]$ is
(1) 86
(2) 78
(3) 84
(4) 34

Amy Jiang

Numerade Educator

01:41

Problem 51

EAN of $\left[\mathrm{Fe}\left(\eta^{2}-\mathrm{C}_{5} \mathrm{H}_{5}\right)(\mathrm{CO})_{2} \mathrm{Cl}\right]:$
(1) 36
(2) 35
(3) 37
(4) 34

Patha Sharma

Numerade Educator

08:25

Problem 52

Which has maximum EAN of the underbold atoms?
$(\mathrm{Cr}=24, \mathrm{Co}=27, \mathrm{Fe}=26, \mathrm{Ni}=28)$
(1) $[\operatorname{Cr}(\mathrm{EDTA})]^{\Theta}$
$(2)\left[\mathrm{Co}(\mathrm{en})_{3}\right]^{3+}$
(3) $\left[\mathbf{N i}(\mathrm{CN})_{4}\right]^{2-}$
(4) $\left[\mathrm{Fe}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{3}\right]^{3-}$

Maryam Riaz

Numerade Educator

01:45

Problem 53

Give EAN value of $\mathrm{Mg}$ in $[\mathrm{Mg}(\mathrm{EDTA})]^{2-}$
(1) 16
(2) 20
(3) 22
(4) 18

David Collins

Numerade Educator

Problem 54

EAN of cobalt is 36 in $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{2} \mathrm{O}_{2}\right.$ (en) $\left.\mathrm{Br}\right]$. Thus, $\mathrm{O}_{2}$ is
(1) dioxide
(2) superoxide ion
(3) peroxide ion
(4) oxide

Hunza Gilgit

Numerade Educator

Problem 55

EAN of Fe in $\left[\mathrm{Fe}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{3}\right]^{3-}$ is
(1) 27
(2) 24
(3) 35
(4) 29

Narayan Hari

Numerade Educator

01:41

Problem 56

The EAN of $\mathrm{Fe}$ atom in $(\mathrm{CO})_{3} \mathrm{Fe}-\mathrm{Fe}(\mathrm{CO})_{3}$ is
(1) 34
(2) 35
(3) 36
(4) 37

Patha Sharma

Numerade Educator

Problem 57

$\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]\left[\mathrm{Cr}(\mathrm{CN})_{6}\right]$ and $\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{6}\right][\mathrm{Co}(\mathrm{CN})]$ are
(1) Linkage isomers
(2) Ionisation isomers
(3) Coordination isomers
(4) None of these

Narayan Hari

Numerade Educator

00:22

Problem 58

The type of isomerism present in pentaammine nitro chromium(III) perchlorate is
(1) Optical
(2) Linkage
(3) Hydrate
(4) Polymerisation

Mishal Gul

Numerade Educator

03:04

Problem 59

Which one of the following has the largest number of isomers?
(1) $\left[\mathrm{Cr}(\mathrm{en})_{2} \mathrm{Cl}_{2}\right]^{\oplus}$
(2) $\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{5} \mathrm{Cl}\right]^{2+}$
(3) $\left[\mathrm{Ru}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{Cl}_{2}\right]^{\oplus}$
(4) $\left[\operatorname{lr}\left(\mathrm{PR}_{3}\right)_{2} \mathrm{H}(\mathrm{CO})\right]^{2+}$

Himanshu Kushwaha

Numerade Educator

Problem 60

$\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{5} \mathrm{NO}_{2}\right] \mathrm{SO}_{4}$ and $\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{5} \mathrm{ONO}\right] \mathrm{SO}_{4}$ are related to each other as:
(1) Geometrical isomers
(2) Linkage isomers
(3) Coordination isomers
(4) lonisation isomers

Narayan Hari

Numerade Educator

Problem 61

Which one of the following will be able to show geometrical isomerism if complexes are square planar?
(1) $\mathrm{Ma}_{4}$
(2) $\mathrm{Ma}_{3} \mathrm{~b}$
(3) Mabcd
(4) $\left[\mathrm{M}(\mathrm{AA})_{2}\right]$

Narayan Hari

Numerade Educator

00:40

Problem 62

The number of geometrical and optical isomers of $\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{3}\left(\mathrm{NO}_{3}\right)_{3}\right]$ is
(1) 3
(2) 2
(3) 0
(4) 4

Maryam Riaz

Numerade Educator

Problem 63

Both geometrical and optical isomerisms are shown by
(1) $\left[\mathrm{Co}(\mathrm{en})_{2} \mathrm{l}_{2}\right]^{\oplus}$
(2) $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{2}\right]^{2+}$
(3) $\left[\mathrm{Cr}(\mathrm{OX})_{3}\right]^{3-}$
(4) $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{l}_{2}\right]^{\oplus}$

Narayan Hari

Numerade Educator

Problem 64

In $\left[\mathrm{Co}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{3}\right]^{3}$, the isomerism shown is
(1) Ligand
(2) Optical
(3) Geometrical
(4) Ionisation

Narayan Hari

Numerade Educator

Problem 65

Which of the following octahedral complex does not show geometrical isomerism (A and B are monodentate ligands)?
(1) $\left[\mathrm{MA}_{3} \mathrm{~B}_{3}\right]$
(2) $\left[\mathrm{MA}_{4} \mathrm{~B}_{2}\right]$
(3) $\left[\mathrm{MA}_{5} \mathrm{~B}\right]$
(4) $\left[\mathrm{MA}_{2} \mathrm{~B}_{4}\right]$

Narayan Hari

Numerade Educator

Problem 66

Facial-meridional isomers is associated with which one of the following complex? (M = central metal)
(1) $\left[\mathrm{M}(\mathrm{AA})_{2}\right]$
(2) $\left[\mathrm{MA}_{3} \mathrm{~B}_{3}\right]$
(3) [MABCD]
(4) $\left[\mathrm{M}(\mathrm{AA})_{3}\right]$

Narayan Hari

Numerade Educator

01:18

Problem 67

The total number of possible coordination isomer for the given compound $\left[\mathrm{Pt}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{Br}_{2}\right]\left[\mathrm{PtBr}_{4}\right]$ is
(1) 2
(2) 4
(3) 5
(4) 3

Hunza Gilgit

Numerade Educator

00:39

Problem 68

The following complexes are given
1. trans-[ $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{l}_{2}\right]^{\oplus}$
2. $c i s-\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{2}(\mathrm{en})_{2}\right]^{3+}$
3. trans $-\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{2}(\mathrm{en})_{2}\right]^{3+}$
4. $\left[\mathrm{Nil}_{4}\right]^{2-}$
5. $\left[\mathrm{TiF}_{6}\right]^{2-}$
6. $\left[\mathrm{CoF}_{6}\right]^{3-}$
Choose the correct code.
(1) 4,5 are coloured; 6 is colourless
2) 2 is optically active; 1,3 are optically inactive
3) 1,2 are optically active; 3 optically inactive
4) 4 is coloured; 5,6 are colourless

Ahmed Ali

Numerade Educator

Problem 69

The following represents a pair of enantiomers:
(1) trans- $\left[\mathrm{Crl}_{2} \mathrm{en}_{2}\right]^{\oplus}$
(3) trans $-\left[\mathrm{Crl}_{2}\left(\mathrm{NH}_{3}\right)_{4}\right]^{\oplus}$
(2) cis-[Crl $\left._{2} \mathrm{en}_{2}\right]^{\oplus}$
(4) cis $-\left[\mathrm{Crl}_{2}\left(\mathrm{NH}_{3}\right)_{4}\right]^{\oplus}$

Aadit Sharma

Numerade Educator

03:52

Problem 70

The compound $\left[\mathrm{PtBr}_{2}\left(\mathrm{NH}_{3}\right)_{2}\right]$ can form
(1) Geometrical isomers
(3) Optical isomers
(2) Coordination isomers
(4) Linkage isomers

Marissa Turner

Numerade Educator

03:52

Problem 71

The compound $\left[\mathrm{CrCl}_{2}\left(\mathrm{NH}_{3}\right)_{2}(\mathrm{en})\right]$ can form
(1) Geometrical isomers
(3) Optical isomers
(2) Coordination isomers
(4) Linkage isomers

Marissa Turner

Numerade Educator

01:16

Problem 72

One mole of complex compound $\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{5} \mathrm{Cl}_{3}$ gives 3 moles of ions on dissolution in water. One mole of the same, complex reacts with two moles of $\mathrm{AgNO}_{3}$ to yield two moles of $\mathrm{AgCl}_{(s)}$. The complex is
(1) $\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{Cl}\right] \mathrm{Cl}_{2} \cdot \mathrm{NH}_{3}$
(2) $\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{Cl}_{2}\right] \mathrm{Cl} \cdot \mathrm{NH}_{3}$
(3) $\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{5} \mathrm{Cl}\right] \mathrm{Cl}_{2}$
(4) $\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{3} \mathrm{Cl}_{3}\right] \cdot 2 \mathrm{NH}_{3}$

Alkendra Singh

Numerade Educator

03:12

Problem 73

Which of the following will show optical isomerism?
(1) $\left[\mathrm{ZnCl}_{4}\right]^{2-}$
(2) $\left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}$
(3) $\left[\mathrm{Cr}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{3}\right]^{3-}$
(4) $\left[\mathrm{Co}(\mathrm{CN})_{6}\right]^{3}$

Himanshu Kushwaha

Numerade Educator

03:16

Problem 74

In which of the following pairs both the complexes show optical isomerism?
(1) $\operatorname{cis}-\left[\mathrm{Cr}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{2} \mathrm{Cl}_{2}\right]^{3}, \quad$ cis- $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{Cl}_{2}\right]$
(2) $\left[\mathrm{Co}(\mathrm{en})_{3}\right] \mathrm{Cl}_{3}$,
(3) $\left[\mathrm{Co}\left(\mathrm{NO}_{3}\right)_{3}\left(\mathrm{NH}_{3}\right)_{3}\right]$
$c i s-\left[\mathrm{Co}(\mathrm{en})_{2} \mathrm{Cl}_{2}\right] \mathrm{Cl}$
(4) $[\mathrm{PtCl}(\mathrm{en}) \mathrm{Cl}]$
cis- $\left[\mathrm{Pt}(\mathrm{en})_{2} \mathrm{Cl}_{2}\right]$
$\left[\mathrm{NiCl}_{2} \mathrm{Br}_{2}\right]^{2}$

Maryam Riaz

Numerade Educator

Problem 75

Which of the following gives the maximum number of isomers?
(1) $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{4}{ }_{2} \mathrm{I}_{2}\right]$
(2) $\left[\mathrm{Ni}(\mathrm{en})\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}$
(3) $\left[\mathrm{Ni}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)(\mathrm{en})_{2}\right]$
(4) $\left[\mathrm{Cr}(\mathrm{SCN})_{2}\left(\mathrm{NH}_{3}\right)_{1}^{q}\right.$

Narayan Hari

Numerade Educator

Problem 76

The possible number of optical isomers in $\left[\mathrm{Cr}(\mathrm{en})_{2} \mathrm{Cl}_{2}\right]^{4}$ is
(1) 6
(2) 3
(3) 4
(4) 2

Narayan Hari

Numerade Educator

01:20

Problem 77

Which of the following does not have optical isomers?
(1) $\left[\mathrm{Co}(\mathrm{en})_{3}\right] \mathrm{Br}_{3}$
(3) $\left[\mathrm{Co}(\mathrm{en})_{2} \mathrm{Br}_{2}\right] \mathrm{Br}$
(2) $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{3} \mathrm{Br}_{3}\right]$
(4) $\left[\mathrm{Co}(\mathrm{en})\left(\mathrm{NH}_{3}\right)_{2} \mathrm{Br}_{2} \mid \mathrm{B}_{\mathrm{r}}\right.$

Hunza Gilgit

Numerade Educator

Problem 78

Which of the following will give a pair of enantiomorphs?
(1) $\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{6}\right]\left[\mathrm{Co}(\mathrm{CN})_{6}\right]$
(3) $\left[\mathrm{Pt}\left(\mathrm{NH}_{3}\right)_{4}\right]\left[\mathrm{PtCl}_{6}\right]$
(2) $\left[\mathrm{Co}(\mathrm{en})_{2} \mathrm{Cl}_{2}\right] \mathrm{Cl}$
(4) $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{Cl}_{2}\right] \mathrm{NO}_{2}$

Narayan Hari

Numerade Educator

01:11

Problem 79

Both $\mathrm{Cr}^{3+}$ and $\mathrm{Pt}^{4+}$ have a coordination number of $6 .$ Which of the following pairs of complexes will show approximately the same electrical conductance for their $0.1 \mathrm{M}$ aqueow solutions?
(1) $\mathrm{CrCl}_{3} \cdot 4 \mathrm{NH}_{3}$ and $\mathrm{PtCl}_{4} \cdot 4 \mathrm{NH}_{3}$
(2) $\mathrm{CrCl}_{3} \cdot 3 \mathrm{NH}_{3}$ and $\mathrm{PtCl}_{4} \cdot 5 \mathrm{NH}_{3}$
(3) $\mathrm{CrCl}_{3} \cdot 6 \mathrm{NH}_{3}$ and $\mathrm{PtCl}_{4} \cdot 5 \mathrm{NH}_{3}$
(4) $\mathrm{CrCl}_{3} \cdot 5 \mathrm{NH}_{3}$ and $\mathrm{PtCl}_{4} \cdot 6 \mathrm{NH}_{3}$

Narayan Hari

Numerade Educator

01:59

Problem 80

Select the correct statement for $\left[\mathrm{M}(\mathrm{AB}) \mathrm{b}_{2} \mathrm{~cd}\right]:$
(1) All geometrical isomers are optically active.
(2) It has four trans isomer with respect to $b$.
(3) It has seven geometrical isomers.
(4) It has three cis and two trans isomers with respett to $b$

Hunza Gilgit

Numerade Educator

01:37

Problem 81

Which one of the following coordination compuris exhibits ionisation isomerism?
(1) $\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{6}\right] \mathrm{Cl}_{3}$
(2) $\left[\mathrm{Cr}(\mathrm{en})_{3} \mathrm{Cl}_{3}\right]$
(3) $\left[\mathrm{Cr}(\mathrm{en})_{3}\right] \mathrm{Cl}_{3}$
(4) $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{3} \mathrm{Br}\right] \mathrm{SO}_{4}$

Hunza Gilgit

Numerade Educator

01:37

Problem 82

Which of the following complex compounds exhibis cis-trans isomerism?
(1) $\left[\mathrm{PtCl}_{2}\left(\mathrm{NH}_{3}\right)_{2}\right]$
(2) $\left[\mathrm{PdCl}_{2} \mathrm{Brl}\right]$
(3) $\left[\mathrm{Pt}\left(\mathrm{NH}_{3}\right)(\mathrm{py})(\mathrm{Cl})(\mathrm{Br})\right]$
(4) All of these

Hunza Gilgit

Numerade Educator

01:26

Problem 83

How many geometrical isomers are possible for the squale planar complex $\left[\mathrm{Pt}\left(\mathrm{NO}_{2}\right)(\mathrm{py})\left(\mathrm{NH}_{3}\right)\left(\mathrm{NH}_{2} \mathrm{OH}\right)\right] \mathrm{NO}_{2} ?$
(1) Four
(2) Five
(3) Eight
(4) Three

Madi Sousa

Numerade Educator

Problem 84

Consider the following spatial arrangements of the octahedral complex ion $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{Cl}_{2}\right]^{\oplus}$
Which of the following statements is incorrect regarding these structures?
[i) 1 and II are enantiomers
II II and III are cis and trans isomers respectively
[) III and IV are trans and cis isomers respectively
A) II and IV have identical structures.

Narayan Hari

Numerade Educator

02:14

Problem 85

Which of the following pairs of structures represent facial ad meridional isomers (geometrical isomers) respectively?
1.
2.
3.
4.

Katherine Mccandless

Numerade Educator

03:30

Problem 86

Which would exhibit coordination isomerism?
(1) $\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{6}\right]\left[\mathrm{CO}(\mathrm{CN})_{6}\right]$
(2) $\left[\mathrm{Cr}(\mathrm{en})_{2} \mathrm{Cl}_{2}\right]^{\mathrm{T}}$
(3) $\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{6}\right] \mathrm{Cl}_{3}$
(4) $[\mathrm{Cr}(\mathrm{edta})]$

Maryam Riaz

Numerade Educator

01:27

Problem 87

Which would exhibit ionisation isomerism?
(1) $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]\left[\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{3}\right]$
(2) $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{5} \mathrm{Br}\right]^{2+} \mathrm{SO}_{4}^{2-}$
(3) $\mathrm{K}_{3}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]$
(4) $\mathrm{K}_{3}\left[\mathrm{Fe}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{3}\right]$

Hunza Gilgit

Numerade Educator

Problem 88

The water-soluble complex among the following is
(1) $\left[\mathrm{Ni}(\mathrm{HDMG})_{2}\right]$
(2) $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{3} \mathrm{Cl}_{3}\right]$
(3) $\mathrm{Ni}(\mathrm{CO})_{4}$
(4) $\left[\mathrm{Ni}(\mathrm{HDMG})_{7}\right] \mathrm{Cl}_{2}$

Narayan Hari

Numerade Educator

01:27

Problem 89

Arrange the following optical activity possible in
(1) $\left[\mathrm{Co}\left(\mathrm{H}_{2} \mathrm{O}\right)_{2}\left(\mathrm{NH}_{3}\right)_{3} \mathrm{Cl}\right]^{\oplus}$
(2) $\left[\mathrm{Co}\left(\mathrm{H}_{2} \mathrm{O}\right)_{4} \mathrm{Cl}_{2}\right]^{\oplus}$
(3) $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{4}\left(\mathrm{NO}_{2}\right) \mathrm{Cl}\right]^{\oplus}$
(4) $\left[\mathrm{Co}(\mathrm{CN})_{5} \mathrm{NC}\right]^{\ominus}$

Hunza Gilgit

Numerade Educator

01:51

Problem 90

When an excess of ammonia solution is added to $\mathrm{CuSO}_{4}$ which solution is formed?
(1) $\left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{2}\right]^{2+}$
(2) $\left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}^{\oplus}\right.$
(3) $\left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{2}\right]^{\oplus}$
(4) $\left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2-}$

Arpit Gupta

Numerade Educator

00:42

Problem 91

Copper sulphate solution reacts with $\mathrm{KCN}$ to give
(1) $\mathrm{Cu}(\mathrm{CN})_{2}$
(2) $\mathrm{CuCN}$
(3) $\mathrm{K}_{2}\left[\mathrm{Cu}(\mathrm{CN})_{4}\right]$
(4) $\mathrm{K}_{3}\left[\mathrm{Cu}(\mathrm{CN})_{4}\right]$

Alkendra Singh

Numerade Educator

01:08

Problem 92

The ionisation isomer of $\left[\mathrm{Co}\left(\mathrm{H}_{2} \mathrm{O}\right)_{4} \mathrm{Cl}\left(\mathrm{NO}_{2}\right)\right] \mathrm{Cl}$ is
(1) $\left[\mathrm{Co}\left(\mathrm{H}_{2} \mathrm{O}\right)_{4}\left(\mathrm{NO}_{2}\right)\right] \mathrm{Cl}_{2}$
(2) $\left[\mathrm{Co}\left(\mathrm{H}_{2} \mathrm{O}\right)_{4} \mathrm{Cl}_{2}\right] \mathrm{NO}_{2}$
(3) $\left[\mathrm{Co}\left(\mathrm{H}_{2} \mathrm{O}\right), \mathrm{Cl}(\mathrm{ONO})\right] \mathrm{Cl}$
(4) $\left[\mathrm{Co}(\mathrm{H}, \mathrm{O})_{4} \mathrm{Cl}_{2}(\mathrm{NO},)\right] \cdot \mathrm{H}_{2} \mathrm{O}$,

Raghvendra Singh

Numerade Educator

01:24

Problem 93

The $0.0001$ molal solution of a complex $A B_{10}$ has the freezing point of $-0.0015^{\circ} \mathrm{C}$ in water. Assuming $100^{\circ}$ dissociation of the complex. find the proper representation of the complex. $\left[\mathrm{K}_{1}\left(\mathrm{H}_{2} \mathrm{O}=1.86 \mathrm{Km}^{-1}\right)\right]$
(1) $\left[\mathrm{AB}_{8}\right]$
(2) $\left[\mathrm{AB}_{3}\right] \mathrm{B}_{7}$
(3) $\left[\mathrm{AB}_{7}\right] \mathrm{B}_{3}$
(4) $\left[\mathrm{AB}_{5}\right] \mathrm{B}_{3}$

Hast Aggarwal

Numerade Educator

03:27

Problem 94

From the information given in the passage, what is the most likely configuration of the cobalt d-clectrons for the species
(A) $\mathrm{CoCl}_{6}^{3}$ and $(\mathrm{B}) \mathrm{Co}\left(\mathrm{NO}_{2}\right)_{0}^{3} \because$
(1) both (A) and (B) have low spin
(2) $(\mathrm{A})$ has high spin; $(\mathrm{B})$ has low spin
(3) (A) has low spin; (B) has high spin
(4) Both (A) and (B) have high spin

Aadit Sharma

Numerade Educator

Problem 95

The hybridisation states of the central atom ton in the complex ions $\left[\mathrm{FeF}_{6}\right]^{3},\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right), \mathrm{I}^{3+}\right.$ and $\left[\mathrm{Ni}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}$ are:
(1) $s p^{3} d^{2}, d s p^{2}$ and $d^{4} s^{2}$ respectively
(2) all $3,2^{2} 4 \times 4 p^{3}$
(3) all $4 s 4 p^{3} 4 d^{2}$
(4) $s p^{3} d^{2}, d s p^{3}$ and $p^{4} d^{2}$ respectively

Raghvendra Singh

Numerade Educator

Problem 96

Among $\left(\right.$ A) $\mathrm{TiF}_{6}^{2} \cdot$ (B) $\mathrm{CoF}_{6}^{2}$, (C) $\mathrm{Cu}_{2} \mathrm{Cl}_{2}$ and $(\mathrm{D}) \mathrm{NiCl}_{4}^{2}$ (atomic number of $\mathrm{Ti}=22, \mathrm{Co}=27, \mathrm{Cu}=29, \mathrm{Ni}=28$ ), the colourless species are:
(I) $(\mathrm{B})$ and $(\mathrm{D})$
(2) $(\mathrm{A})$ and $(\mathrm{B})$
$(3)(\mathrm{C})$ and $(\mathrm{D})$
(4) $(\mathrm{A})$ and $(\mathrm{C})$

Narayan Hari

Numerade Educator

03:10

Problem 97

The magnetic moment of a complex ion is $2.83 \mathrm{BM}$ The complex ion is:
(1) $\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{0}\right]^{3+}$
(2) $\left[\mathrm{Cu}(\mathrm{CN})_{6}\right]^{2}$
(3) $\left[\mathrm{V}\left(\mathrm{H}_{2} \mathrm{O}\right)_{0}\right]^{3+}$
(4) $\left[\mathrm{MnCl}_{4}\right]^{2-}$

Himanshu Kushwaha

Numerade Educator

02:00

Problem 98

Which of the following statements is not true for the reaction given below?
$\left[\mathrm{Cu}\left(\mathrm{H}_{2} \mathrm{O}\right)_{0}\right]^{2+}+4 \mathrm{NH}_{3} \rightleftharpoons\left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}+4 \mathrm{H}_{2} \mathrm{O}$
(1) It is a ligand-substitution reaction
(2) $\mathrm{NH}_{3}$ is a relatively strong-field ligand while $\mathrm{H}_{2} \mathrm{O}$ is a weak field ligand.
(3) During the reaction, there is a change in colour from light blue to dark blue.
(4) [Cu(NH $\left.\left._{3}\right)_{4}\right]^{2+}$ has a tetrahedral structure, and is paramagnetic.

Hunza Gilgit

Numerade Educator

Problem 99

The $d$-electron configurations of $\mathrm{Mn}^{2+}, \mathrm{Fe}^{2+}, \mathrm{Co}^{3+}$ and $\mathrm{Ni}^{2+}$ are $3 d^{5}, 3 d^{6}, 3 d^{6}, 3 d^{8}$, respectively. Which of the following aqua complexes will exhibit the minimum paramagnetic behaviour?
(1) $\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}$
(2) $\left[\mathrm{Co}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}$
(3) $\left[\mathrm{Mn}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}$
(4) $\left[\mathrm{Ni}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}$

Narayan Hari

Numerade Educator

Problem 100

Which of the following is paramagnetic?
(1) $\left[\mathrm{Fe}(\mathrm{CO})_{5}\right]$
(3) $\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{4}$
(2) $\left[\mathrm{Cr}(\mathrm{CO})_{6}\right]$
(4) $\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}$

Narayan Hari

Numerade Educator

00:16

Problem 101

The pair in which both species have same magnetic moment (spin only value) is
(1) $\mathrm{I}\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+},\left[\mathrm{CoCl}_{4}\right]^{2-}$
(2) $\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+},\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}$
(3) $\left[\mathrm{Mn}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+},\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}$
(4) $\left[\mathrm{CoCl}_{4}\right]^{2-},\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}$

Mishal Gul

Numerade Educator

Problem 102

- Select the correct order of magnetic moment (in BM) from the following options:
I. $\left[\mathrm{MnCl}_{4}\right]^{2-}$
II. $\left[\mathrm{CoCl}_{4}\right]^{2-}$
$(1) \mathrm{J}>\mathrm{II}>\mathrm{III}$
(2) III > II > I
(3) III > I > II
(4) $\mathrm{I}>\mathrm{III}>\mathrm{II}$

Narayan Hari

Numerade Educator

Problem 103

Which of the pair of complex compounds are tetrahedral as well as diamagnetic?
(1) $\left[\mathrm{CoCl}_{4}\right]^{\ominus}$ and $\left[\mathrm{Co}(\mathrm{CO})_{4}\right]^{\ominus}$
(2) $\left[\mathrm{Ag}(\mathrm{SCN})_{4}\right]^{2}$ and $\left[\mathrm{NiCI}_{4}\right]^{2}$
(3) $\left[\mathrm{Co}(\mathrm{CO})_{4}\right]^{\ominus}$ and $\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{4}$
(4) $\left[\mathrm{PdCl}_{4}\right]^{2}$ and $\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2}$

Narayan Hari

Numerade Educator

Problem 104

Which of the following has a square planar geometry?
(1) $\left[\mathrm{Ptl}_{4}\right]^{2-}$
(2) $\left[\mathrm{Col}_{4}\right]^{2-}$
(3) $\left[\mathrm{Fel}_{4}\right]^{2-}$
(4) $\left[\mathrm{Nil}_{4}\right]^{2-}$

Narayan Hari

Numerade Educator

01:08

Problem 105

Among $\left[\mathrm{Ni}(\mathrm{CO})_{4}\right],\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2-}$ and $\left[\mathrm{NiBr}_{4}\right]^{2}$ species, the hybridisation state of $\mathrm{Ni}$ atoms are respectively:
(1) $s p^{3}, d s^{2} p, d s p^{2}$
(2) $s p^{3}, d s p^{2}, s p^{3}$
$(3) d s p^{2}, s p^{3}, s p^{3}$
(4) $s p^{3}+s p^{3}, d s p^{2}$

Narayan Hari

Numerade Educator

01:24

Problem 106

Arrange the following in order of decreasing number of unpaired electrons.
I. $\left[\mathrm{Fc}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}$
II. $\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3}$
III. $\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{4}$
II. $\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}$
(1) IV, I, II, III
(2) I, II, III, IV
(3) III, II, I, IV
(4) II. III, I, IV

Alkendra Singh

Numerade Educator

00:28

Problem 107

A substance which is not paramagnetic is
(1) $\mathrm{Cr}\left(\mathrm{ClO}_{4}\right)_{3}$
(2) $\mathrm{KMnO}_{4}$
(3) $\mathrm{TiCl}_{3}$
(4) $\mathrm{VOBr}_{2}$

Hunza Gilgit

Numerade Educator

01:54

Problem 108

Which of the following statements is correct?
(1) $\left[\mathrm{NiCl}_{4}\right]^{2-}$ complex is more stable than $\left[\mathrm{Ni}(\mathrm{dmg})_{2}\right]$ due to higher CFSE value.
(2) With $d^{2} s p^{3}$ hybridisation $\left[\mathrm{FeCl}(\mathrm{CN})_{4}\left(\mathrm{O}_{2}\right)\right]^{4}$ complex is diamagnetic.
(3) $\left[\mathrm{V}(\mathrm{CO})_{6}\right]$ is not very stable and easily reduces to $\left[\mathrm{V}(\mathrm{CO})_{6}^{\circ}\right]^{\Theta}$
(4) Ligands such as $\mathrm{CO}, \mathrm{CN}^{\ominus}, \mathrm{NO}^{\oplus}$ are $\pi$ electron donor due to the presence of filled $\pi$-molecular orbital.

Hunza Gilgit

Numerade Educator

01:19

Problem 109

An aqueous solution of titanium bromide shows zero magnetic moment. Assuming the complex as octahedral in aqueous solution, the formula of the complex is
(1) $\left[\mathrm{TiBr}_{6}\right]^{3-}$
(2) $\left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right] \mathrm{Br}_{4}$
(3) $\left[\mathrm{TiBr}_{6}\right]^{2-}$
(4) $\left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{4} \mathrm{Br}_{2}\right]$

Patha Sharma

Numerade Educator

01:46

Problem 110

Geometry, hybridisation and magnetic moment of the ions $\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2-},\left[\mathrm{MnBr}_{4}\right]^{2-}$, and $\left[\mathrm{FeF}_{6}\right]^{3-}$, respectively are
(1) Tetrahedral, square planar, octahedral: $$ d s p^{2}, s p^{3}, s p^{3} d^{2}: 0,5.9,4.9 $$
(2) Tetrahedral, square planar, octahedral:
$s p^{3}, d s p^{2}, s p^{3} d^{2}: 5.9,0,4.9$
(3) Square planar, tetrahedral, octahedral:
$d s p^{2}, s p^{3}, d^{2} s p^{3}: 5.9,4.9,0$
(4) Square planar, tetrahedral, octahedral:
$d s p^{2}, s p^{3}, s p^{3} d^{2}: 0,5.9,4.9$

Alkendra Singh

Numerade Educator

Problem 111

The correct order of magnetic moment (spin values in BM) is (Atomic number $\mathrm{Mn}=25, \mathrm{Fe}=26, \mathrm{Co}=27)$ I. $\left[\mathrm{MnBr}_{4}\right]^{2-}$ II. $\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{+} \quad$ III. $\left[\mathrm{CoBr}_{4}\right]^{2-}$
(1) $\mathrm{II}>\mathrm{III}>1$
(2) $\mathrm{I}>\mathrm{II}>\mathrm{III}$
(3) $\mathrm{II}>\mathrm{I}>\mathrm{III}$
(4) $\mathrm{I}>\mathrm{III}>\mathrm{ll}$

Narayan Hari

Numerade Educator

01:06

Problem 112

A square planar complex is formed by hybridisation of which atomic orbitals?
(1) $s, p_{x}, p_{y}, d_{y z}$
(2) $s, p_{x}, p_{y}, d_{2}=2$
(3) $s, p_{y}, p_{z}, d_{x y}$
(4) $s, p_{1}, p_{v}, d_{z-2}$

Alkendra Singh

Numerade Educator

02:23

Problem 113

The colour of a complex compound is due to:
(1) Promotion of $3 d$-electrons of the central atomion to $4 p$-orbitals
(2) Promotion of $3 d$-electrons of the central atom/ion to $4 s$-orbitals
(3) Promotion of $3 d$-electrons of the central atom/ion withiin d-orbitals
(4) Promotion of $4 s$-electrons of the central atom/ion to $4 p$-orbitals

Himanshu Kushwaha

Numerade Educator

00:44

Problem 114

If a transition-metal compound absorbs violet-indigo 14 a radiation in the visible region. Its colour would be
1 , gren
(2) Yellow
3 Orange
(4) Blue

Hast Aggarwal

Numerade Educator

02:20

Problem 115

Transition metal compounds are usually coloured. This is due to the electronic transition:
(1) From $d$-orbital to $s$-orbital
(2) From $p$-orbital to $s$-orbital
(3) From $d$-orbital to $p$-orbital
(4) Within the $d$-orbitals

Shahina -

Numerade Educator

Problem 116

Which of the following compound is not coloured?
(1) $\mathrm{Na}_{2}\left[\mathrm{CuCl}_{4}\right]$
(1) $\mathrm{Na}_{2}[\mathrm{Cu}$ (3) $\mathrm{K}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]$
(2) $\mathrm{Na}_{2}\left[\mathrm{CdCl}_{4}\right]$
(4) $\mathrm{K}_{3}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]$

Narayan Hari

Numerade Educator

00:56

Problem 117

The colour of Cu ${ }^{\infty}$ compound is
(1) White
(2) Blue
$(3)$ Orange
(4) Yellow

Alkendra Singh

Numerade Educator

03:35

Problem 118

Which of the following complex has higher $\Delta_{0}$ value?
(1) $\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}$
(3) $\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}$
(2) $\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}$
(4) All have equal

Hashim Choudhry

Numerade Educator

02:54

Problem 119

Relative to the average energy in the spherical crystal field, the $\mathrm{t}_{2 \mathrm{~g}}$ orbitals in tetrahedral field is
(1) Raised by $(2 / 5) \Delta_{\mathrm{t}}$
(2) Lowered by $(2 / 5) \Delta_{\mathrm{t}}$
(3) Raised by $(3 / 5) \Delta_{\mathrm{t}}$
(4) Lowered by $(1 / 5) \Delta_{\mathrm{t}}$

Ronald Prasad

Numerade Educator

07:18

Problem 120

The crystal field splitting energy for octahedral $\left(\Delta_{0}\right)$ and tetrahedral $\left(\Delta_{\mathrm{t}}\right)$ complexes is related as:
(1) $\Delta_{\mathrm{t}}=\frac{4}{9} \Delta_{0}$
(2) $\Delta_{\mathrm{t}}=\frac{1}{2} \Delta_{0}$
(3) $\Delta_{0}=-2 \Delta_{\mathrm{t}}$
(4) $\Delta_{0}=-\frac{4}{9} \Delta_{t}$

Susan Hallstrom

Numerade Educator

05:55

Problem 121

$\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right] \mathrm{Cl}_{3}$ (atomic number of $\mathrm{Cr}=24$ ) has a magnetic moment of $3.83 \mathrm{BM}$. The correct distribution of $3 d$-elections in the chromium present in the complex is
(1) $3 d_{x y}^{1}, 3 d_{y z}^{1}, 3 d_{z x}^{1}$
(2) $3 d_{x y}^{1}, 3 d_{y z}^{1}, 3 d_{z^{2}}^{1}$
(3) $3 d_{\left(x^{2}-y^{2}\right)}^{1}, 3 d_{z^{2}}^{1}, 3 d_{z x}^{1}$
(4) $3 d_{x y}^{1}, 3 d_{\left(x^{2}-y^{2}\right)}^{1}, 3 d_{x z}^{1}$

Preeti Kumari

Numerade Educator

Problem 122

In which of the following coordination entities, the magnitude of $\Delta_{0}$ [CFSE in octahedral field] will be maximum?
(1) $\left[\mathrm{Co}(\mathrm{CN})_{6}\right]^{3-}$
(2) $\left[\mathrm{CoF}_{6}\right]^{3-}$
(3) $\left[\mathrm{Co}\left(\mathrm{NO}_{2}\right)_{6}\right]^{3-}$
(4) $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}$

Narayan Hari

Numerade Educator

01:50

Problem 123

In which of the following configurations will there be the possibility of both para and diamagnetism, depending on the nature of the ligands?
(1) $d^{3}$
(2) $d^{7}$
(3) $d^{6}$
(4) $d^{5}$

Marissa Turner

Numerade Educator

01:54

Problem 124

For $\mathrm{Mn}^{3+}$ ion, the electron pairing energy $\mathrm{P}$ is about $28,000 \mathrm{~cm}^{-1}, \Delta_{0}$ values for the complexes $\left[\mathrm{Mn}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}$ and $\left[\mathrm{Mn}(\mathrm{CN})_{6}\right]^{3-}$ are $15,800 \mathrm{~cm}^{-1}$ and $38,500 \mathrm{~cm}^{-1}$ respectively, which of the following complex is high spin:
(1) Both are high spin
(2) $\left[\mathrm{Mn}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}$
(3) $\left[\mathrm{Mn}(\mathrm{CN})_{6}\right]^{3-}$
(4) None of these

April Berlyoung

Numerade Educator

Problem 125

Which of the following ligands are correctly represented in an spectrochemical series?
(1) $\mathrm{SCN}^{\ominus}<\mathrm{F}^{\ominus}<\mathrm{CN}^{\ominus}$
(2) $\mathrm{SCN}^{\Theta}<\mathrm{CN}^{\ominus}<\mathrm{F}^{\ominus}$
(3) $\mathrm{F}^{\ominus}<\mathrm{SCN}^{\ominus}<\mathrm{CN}^{\ominus}$
(4) $\mathrm{F}^{\Theta}<\mathrm{CN}^{\Theta}<\mathrm{SCN}^{\ominus}$

Hunza Gilgit

Numerade Educator

Problem 126

The increasing order of the crystal field splitting power of somc common ligands is
(1) $\mathrm{NH}_{3}<\mathrm{NO}_{2}^{\ominus}<\mathrm{CN}^{\Theta}<\mathrm{H}_{2} \mathrm{O}$
(2) $\mathrm{H}_{2} \mathrm{O}<\mathrm{NO}_{2}^{\ominus}<\mathrm{CN}^{\Theta}<\mathrm{NH}_{3}$
(3) $\mathrm{H}_{2} \mathrm{O}<\mathrm{NH}_{3}<\mathrm{NO}_{2}^{\circ}<\mathrm{CN}^{\ominus}$
(4) $\mathrm{H}_{2} \mathrm{O}<\mathrm{NH}_{3}<\mathrm{CN}^{\ominus}<\mathrm{NO}_{2}^{\ominus}$

Narayan Hari

Numerade Educator

05:31

Problem 127

The value of "spin only" magnetic moment for one of the following configuration is $2.84 \mathrm{BM}$. The correct one is
(1) $d^{4}$ (in strong field ligand)
(2) $d^{2}$ (in weak field ligand)
(3) $d^{3}$ (in weak as well as in strong field ligand)
(4) $d^{5}$ (in strong field ligand)

Maryam Riaz

Numerade Educator

01:23

Problem 128

The complexion which has no d-electron in the central metal atom is
(1) $\left[\mathrm{MnO}_{4}\right]^{\ominus}$
(2) $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}$
(3) $\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}$
(4) $\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}$

Raghvendra Singh

Numerade Educator

Problem 129

Which of the following statements is correct for the complex $\mathrm{Ca}_{2}\left[\mathrm{Fe}(\mathrm{CN})_{5} \mathrm{O}_{2}\right]$ having $\mathrm{t}_{2 \mathrm{~g}}{ }^{6}, \mathrm{e}_{\mathrm{g}}^{0}$ electronic configuration?
(1) $d^{2} s p^{3}$ hybridised and diamagnetic
(2) $s p^{3} d^{2}$ hybridised and paramagnetic
(3) $s p^{3} d^{2}$ hybridised and diamagnetic
(4) $d^{2} s p^{3}$ hybridised and paramagnetic

Narayan Hari

Numerade Educator

01:33

Problem 130

Which of the following complex is inner orbital as well as low spin complex?
(1) $\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}$
(3) $\left[\mathrm{Cu}(\mathrm{CN})_{4}\right]^{3-}$
(2) $\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}$
(4) $\left[\mathrm{Mn}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}$

Hunza Gilgit

Numerade Educator

01:30

Problem 131

The magnetic moment of a certain complex (A) of Co was found to be $4.89 \mathrm{BM}$ and the EAN as 36. Co also forms complex (B) with magnetic moment $3.87 \mathrm{BM}$ and EAN as 37 , and complex (C) with EAN as 36 but diamagnetic. Which of the following statements is true regarding the above observation?
(1) The oxidation states of $\mathrm{Co}$ in $(\mathrm{A}),(\mathrm{B})$ and $(\mathrm{C})$ are $+3,+2$ and $+3$, respectively.
(2) Complexes (A) and (B) have $s p^{3} d^{2}$ hybridisation state while (C) has $d s p^{3}$ hybridisation state.
(3) The spin multiplicities of $\mathrm{Co}$ in $(\mathrm{A}),(\mathrm{B})$ and $(\mathrm{C})$ are 3,2 and 1, respectively.
(4) The oxidation states of $\mathrm{Co}$ in $(\mathrm{A}),(\mathrm{B})$ and $(\mathrm{C})$ are $+6,+8$ and $+1$, respectively.

Raghvendra Singh

Numerade Educator

02:34

Problem 132

Spin only magnetic moments of a $d^{s}$ ion in octahedral, square planar, and tetrahedral complexes, respectively, are
(1) $2.8 \mathrm{BM}, 0$ and $2.8 \mathrm{BM}$
(3) $2.8,2.8$ and $2.8 \mathrm{BM}$
(2) 0,0 and 0 BM
(4) None of these

Himanshu Kushwaha

Numerade Educator

03:35

Problem 133

Given the following data about the absorption maxima of several complex ions, what is the order of $\Delta_{0}$ for these ions?
Compound
I. $\left[\mathrm{CrCl}_{6}\right]^{3}$
$\lambda_{\max }$ 758
11. $\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+} \quad 465$
III. $\left.\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+} \quad \begin{array}{l}465 \\ 694\end{array}\right]$
(1) $\Delta_{0}(\mathrm{I})<\Delta_{0}(1 \mathrm{l})<\Delta_{0}(\mathrm{III})$
(2) $\Delta_{0}(\mathrm{II})<\Delta_{0}(11 \mathrm{I})<\Delta_{0}(\mathrm{l})$
(3) $\Delta_{0}(\mathrm{I})<\Delta_{0}(111)<\Delta_{0}(11)$
(4) $\Delta_{0}(111)<\Delta_{0}(\mathrm{ll})<\Delta_{0}(\mathrm{l})$

Hashim Choudhry

Numerade Educator

06:23

Problem 134

Predict the order of $\Delta_{0}$ for the following compounds:
I. $\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}$
II. $\left[\mathrm{Fe}(\mathrm{CN})_{2}\left(\mathrm{H}_{2} \mathrm{O}\right)_{4}\right]$
III. $\left[\mathrm{Fe}(\mathrm{CN})_{4}\left(\mathrm{H}_{2} \mathrm{O}\right)_{2}\right]^{2}$
(1) $\Delta_{0}(1)<\Delta_{0}(11)<\Delta_{0}(111) \quad(2) \Delta_{0}(11)<\Delta_{0}(1)<\Delta_{0}(I I 1)$
(3) $\Delta_{0}(111)<\Delta_{0}(11)<\Delta_{0}(\mathrm{l})$
(4) $\Delta_{0}(\mathrm{II})<\Delta_{0}(\mathrm{III})<\Delta_{0}(\mathrm{I})$

Lori Mccoy

Numerade Educator

03:35

Problem 135

. Among the following pairs of complexes, in which case the $\Delta_{0}$ value is higher for the second compound.
(1) $\left[\mathrm{Co}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+} \cdot\left[\mathrm{Rh}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}$
(2) $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+},\left[\mathrm{CoCl}_{6}\right]^{3-}$
(3) $\left[\mathrm{Co}\left(\mathrm{H}_{2} \mathrm{O}\right)_{0}\right]^{3+} \cdot\left[\mathrm{Co}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}$
(4) $\left[\mathrm{Co}(\mathrm{CN})_{6}\right]^{3} \cdot\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}$

Hashim Choudhry

Numerade Educator

01:54

Problem 136

Which of the following complexes have high stability constant $\left(k_{s}\right)$ value.
1) $\left[\mathrm{Pt} \mathrm{Br}_{4}\right]^{3-}$
(2) $\left[\mathrm{Pt}\left(\mathrm{NH}_{3}\right) \mathrm{Br}_{3}\right]^{\ominus}$
3) $\left[\mathrm{Pt}\left(\mathrm{NH}_{3}\right)_{3} \mathrm{Br}\right]^{\oplus}$
(4) $\left[\mathrm{Pt}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}$

Hunza Gilgit

Numerade Educator

01:34

Problem 137

The complex ion having minimum wavelength of absorption in the visible region is:
(1) Cis-[Cr Br $\left._{2}\left(\mathrm{NH}_{3}\right)_{4}\right]^{\oplus}$
(2) Trans-[Cr Br $\left._{2}\left(\mathrm{NH}_{3}\right)_{4}\right]^{\oplus}$
(3) $\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}$
(4) [Cr Br $\left.\left(\mathrm{NH}_{3}\right)_{5}\right]^{2+}$

Hunza Gilgit

Numerade Educator

04:58

Problem 138

Select the pairs having green and violet colour respectively.
(1) (I) $\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right] \mathrm{Br}_{3} ;$
(II) $\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{4} \mathrm{Br}_{2}\right]$ Br. $2 \mathrm{H}_{2} \mathrm{O}$
(2) (I) $\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right] \mathrm{Br}_{2}$;
(II) $\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right] \mathrm{Br}_{3}$
(3) (I) $\left[\mathrm{Cr}(\mathrm{ONO})\left(\mathrm{H}_{2} \mathrm{O}\right)_{5}\right] \mathrm{Br}_{2}$
(II) $\left[\mathrm{Cr}\left(\mathrm{NO}_{2}\right)\left(\mathrm{H}_{2} \mathrm{O}\right)\right] \mathrm{Cl}_{2}$
(4) (I) $\left[\operatorname{Pr} \mathrm{Cl}\left(\mathrm{NH}_{3}\right)_{3}\right] \mathrm{NO}_{2}$
(II) $\left[\mathrm{Pt}\left(\mathrm{NO}_{2}\right)\left(\mathrm{NH}_{3}\right)_{3}\right] \mathrm{Cl}$

Himanshu Kushwaha

Numerade Educator

01:18

Problem 139

Select incorrect match between compound and reason for its observed colour.
(1) $\mathrm{HgI}_{2}$ : Polarization
(2) $\mathrm{Ag}_{2} \mathrm{PO}_{4}:$ Polarization
(3) $\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{5} \mathrm{NO}\right] \mathrm{SO}_{4}: \mathrm{d}-\mathrm{d}$ transition
(4) $\mathrm{MnO}_{4}$ : charge transfer spectrum.

Alkendra Singh

Numerade Educator

01:25

Problem 140

I f ~ t h e ~ c o l o u r ~ o f ~ $\left[\mathrm{Ni}\left(\mathrm{H}_{2} \mathrm{O}\right)_{2} \text { (en) }_{2}\right]^{2+}$ (I) is blue-purple then what would be the colour $g\left[\mathrm{Ni}(\mathrm{en})_{3}\right]^{2+}$ (II)?
(1) Violet
(2) Deep blue
(3) Pale blue
(4) Green

Vysakh M

Numerade Educator

01:47

Problem 141

Which is the following compounds absorbs at shorter wavelength in visible spectrum?
(1) $\left[\mathrm{Cr} \mathrm{Br}_{3}\left(\mathrm{H}_{2} \mathrm{O}\right)_{3}\right] \cdot 3 \mathrm{H}_{2} \mathrm{O}$
(2) $\left[\mathrm{Cr} \mathrm{Br}_{2}\left(\mathrm{H}_{2} \mathrm{O}\right)_{4}\right] \mathrm{Br} \cdot 2 \mathrm{H}_{2} \mathrm{O}$
(3) $\left[\mathrm{Cr} \mathrm{Br}\left(\mathrm{H}_{2} \mathrm{O}\right)_{5}\right] \mathrm{Br}_{2} \cdot \mathrm{H}_{2} \mathrm{O}$
(4) $\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right] \mathrm{Br}_{3}$

Cameron Oden

Numerade Educator

02:33

Problem 142

CFSE value for brown ring complex for test of $\mathrm{NO}_{3}$ ion is
(1) $-2.4 \Delta_{0}$
(2) $-1.8 \Delta_{0}$
(3) $-0.8 \Delta_{0}$
(4) $-0.4 \Delta_{0}$

Hunza Gilgit

Numerade Educator

01:00

Problem 143

Which of the following is incorrect about Wilkinson's catalyst?
1) It is a diamagnetic complex.
(2) It is a non-ionic complex.
(3) It is a tetrahedral complex.
(4) It is very effective for selective hydrogenation of organic molecule at room temperature and pressure.

John Nicolle

Numerade Educator

03:09

Problem 144

\begin{aligned}
&\text { Which bond properties are consistent with one another? }\\
&\begin{array}{lll}
\begin{array}{ll}
\text { Bond order } \\
\text { (1) higher }
\end{array} & \begin{array}{l}
\text { Bond length } \\
\text { (2) lower }
\end{array} & \text { vibrational frequency } \\
\text { (3) higher } & \text { shorter } & \text { higher } \\
\text { (4) lower } & \text { longer } & \text { lower } \\
\text { lower } \\
\text { (3) } & \text { higher }
\end{array}
\end{aligned}

Ian Kaigh

Numerade Educator

Problem 145

Select the correct order of $\mathrm{C}-\mathrm{O}$ bond order in mixed phosphine carbonyl complex:
I. $\left[\mathrm{Mo}\left(\mathrm{Ph}_{3} \mathrm{P}\right)_{3}(\mathrm{CO})_{3}\right] \quad$ II. $\left[\mathrm{Mo}\left(\mathrm{Ph}_{2} \mathrm{PCl}\right)_{3}(\mathrm{CO})_{3}\right]$
III. $\left[\mathrm{Mo}\left(\mathrm{PhCl}_{2}\right)_{3}(\mathrm{CO})_{3}\right]$
(1) $\mathrm{I}>\mathrm{II}>\mathrm{III}$
(2) $\mathrm{I}<\mathrm{II}<\mathrm{III}$
$(3) \mathrm{l}=\mathrm{II}>\mathrm{III}$
(4) $\mathrm{I}<\mathrm{II}>\mathrm{III}$

Narayan Hari

Numerade Educator

01:09

Problem 146

Compare C-C bond length $(x)$ of $\mathrm{C}_{2} \mathrm{H}_{4}$ in Zeise's salt and $\mathrm{C}-\mathrm{C}$ bond length $(y)$ of $\mathrm{C}_{2}(\mathrm{CN})_{4}$ in $\mathrm{K}\left[\mathrm{PtCl}_{3} \mathrm{C}_{2}(\mathrm{CN})\right]:$
(1) $x>y$
(2) $y>x$
(3) $x=y$
(4) None of these

Matthew Confer

Numerade Educator

Problem 147

Which of the following organometallic compound is a $\sigma$ and $\pi$-bonded?
1) $\left[\mathrm{Fe}\left(\mathrm{\eta}^{5}-\mathrm{C}_{5} \mathrm{H}_{5}\right)_{2}\right]$
(2) $\mathrm{K}\left[\mathrm{PtCl}_{3}\left(\eta^{2}-\mathrm{C}_{2} \mathrm{H}_{4}\right)\right]$
3) $\left[\mathrm{Co}(\mathrm{CO})_{5} \mathrm{NH}_{3}\right]^{2+}$
(4) $\left[\mathrm{Fe}\left(\mathrm{CH}_{3}\right)_{3}\right]$

Narayan Hari

Numerade Educator

04:44

Problem 148

Which of the following statement(s) is/are true or false? $\mathbf{S}_{1}$ : Complexes having $d^{0}$ or $d^{10}$ configuration of metal ions are always diamagnetic.
$\mathrm{S}_{2}$ : In organometallic compounds, carbon is bonded to metals directly.
$\mathrm{S}_{3}:$ In $\mathrm{Fe}(\mathrm{CO})_{5}$, the $\mathrm{Fe}-\mathrm{C}$ bond possesses both $\sigma$ and $\mathrm{T}$ characteristics.
$\mathrm{S}_{4}$ : Extra stability of metal carbonyls is explained by synergic bonding.
(1) TTTT
(2) FTFT
(3) TTFF
(4) FTTT

Anupa Sharad Medhekar

Numerade Educator

01:39

Problem 149

Which of the following complex can act as an oxidising agent as well as reducing agent?
(1) $\mathrm{Mn}(\mathrm{CO})_{5}$
(2) $\mathrm{Ti}(\mathrm{CO})_{6}$
(3) $\mathrm{Mn}(\mathrm{CO})_{6}$
(4) None of these

Patha Sharma

Numerade Educator

01:52

Problem 150

Which of the following statements is correct for the $\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{5} \mathrm{NO}\right] \mathrm{SO}_{4}$ complex?
(1) The EAN value of $\mathrm{Fe}$ in this complex depends on the charge of NO ligand.
(2) The EAN value of Fe in this complex does not depend on the charge of NO ligand.
(3) The hybridisation of the central atom is $d^{2} s p^{3}$.
(4) It is paramagnetic with $\mu=1.73 \mathrm{BM}$

Hunza Gilgit

Numerade Educator

01:20

Problem 151

Which of the following is not considered as an organometalilic compound?
(1) Ferrocene
(2) Cis-platin
(3) Zeise's salt
(4) Grignard reagent

John Nicolle

Numerade Educator

Problem 152

Among the following, which is not the \pi-bonded órganometallic compound?
(1) $\left(\mathrm{CH}_{3}\right)_{4} \mathrm{~Pb}$
(2) $\left[\mathrm{Cr}\left(\eta^{6}-\mathrm{C}_{6} \mathrm{H}_{6}\right)_{2}\right]$
(3) $\left[\mathrm{Fe}\left(\eta^{5}-\mathrm{C}_{5} \mathrm{H}_{5}\right)_{2}\right]$
(4) $\left.\mathrm{K}\left[\mathrm{PtCl}_{3}(\mathrm{\eta})^{2}-\mathrm{C}_{2} \mathrm{H}_{4}\right)\right]$

Narayan Hari

Numerade Educator

Problem 153

$\mathrm{Mg}$ is an important component of which biomolecule ecturring extensively in living world?
(1) Hacmoglobin
(2) Chlorophyll
(3) Florigen
(4) ATP

Narayan Hari

Numerade Educator

Problem 154

What is the shape of $\mathrm{Fe}(\mathrm{CO})_{5}$ molecule and which of the following $d$-orbitals involved in hybridization?
(1) Tetrahedral $d_{x^{2}-y^{2}}$
(2) Trigonal bipyramidal, $d_{x^{2}-y^{2}}$
(3) Trigonal bipyramidal, $d_{z 2}$
(d) Square pyramidal

Narayan Hari

Numerade Educator

01:27

Problem 155

Among the properties (A) reducing. (B) oxidising, (C) complexing. the set of properties shown by $\mathrm{CN}^{\Theta}$ ion towards metal species is
(I) B.C
(2) $\mathrm{A}, \mathrm{B}, \mathrm{C}$
(3) C.A
(4) A. B

Narayan Hari

Numerade Educator

01:14

Problem 156

Ferrocene is
(1) $\left[\mathrm{Fe}\left(\eta^{2}-\mathrm{C}_{6} \mathrm{H}_{5}\right)_{2}\right]$
(?) $\left[\mathrm{Fe}\left(\eta^{6}-\mathrm{C}_{6} \mathrm{H}_{6}\right)_{2}\right]$
(2) $\left[\mathrm{Fe}\left(\eta^{5}-\mathrm{C}_{5} \mathrm{H}_{5}\right)_{2}\right]$
(4) $\left[\mathrm{Fe}\left(\mathrm{\eta}^{3}-\mathrm{C}_{3} \mathrm{H}_{3}\right)_{2}\right]$

Narayan Hari

Numerade Educator

01:22

Problem 157

Dimethylglyoxime is coordinated to $\mathrm{Ni}^{2+}$ through:
(1) Two oxygen atoms
(2) Two nitrogen atoms
(3) Two oxygen and one nitrogen atoms
(4) Two oxygen and two nitrogen atoms

Varsha Aggarwal

Numerade Educator

01:09

Problem 158

in isolated condition $\mathrm{C}-\mathrm{C}$ bond length of $\mathrm{C}_{2} \mathrm{H}_{4}$ is $\mathrm{x}$, than the bond length ofn $\mathrm{C}-\mathrm{C}$ bond of $\mathrm{C}_{2} \mathrm{H}_{4}$ in Zeise's salt is
(1) Greater than $x$
(3) Equal to $x$
(2) Less than $x$
(4) None of these

Alkendra Singh

Numerade Educator

Problem 159

When $\mathrm{K}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]$ is treated with $\mathrm{FeCl}_{3}$, a blue colour is obtained. It is due to the formation of
(I) $\mathrm{Fe}^{\mathrm{II}}\left[\mathrm{Fe}^{\mathrm{III}}(\mathrm{CN})_{6}\right]^{\ominus}$
(2) $\mathrm{Fe}^{\mathrm{III}}\left[\mathrm{Fe}^{\mathrm{ll}}(\mathrm{CN})_{6}\right]^{\ominus}$
(3) Both (a) and (b)
(4) None of these

Narayan Hari

Numerade Educator

01:55

Problem 160

The common features among the species $\mathrm{CN}^{\ominus}, \mathrm{CO}$ and $\mathrm{NO}^{6}$ are
(1) bond order three and isoelectronic
(2) bond order three and weak field ligands
(3) isoelectronic and weak field ligands
(4) bond order two and $\pi$-acceptors

Preeti Kumari

Numerade Educator

01:22

Problem 161

Consider the following complex:
$$
\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{5} \mathrm{CO}_{3}\right] \mathrm{BrO}
$$
the coordination number, oxidation number, number of d-electrons and number of unpaired $d$-electrons of the metal are respectively:
(1) $6,3,6,0$
(2) $7,1,6,4$
(3) $7,2,7,1$
(4) $6,2,7,3$

Alkendra Singh

Numerade Educator

Problem 162

The bond length of $\mathrm{C}-\mathrm{O}$ bond in carbon monoxide is 1.128A. The C-O bond in $\left[\mathrm{Fe}(\mathrm{CO})_{5}\right]$ is
(1) $1.115 \AA$
(3) $1.178 \AA$
(2) $1.128 \AA$
(4) $1.150 \AA$

Narayan Hari

Numerade Educator

00:55

Problem 163

The most stable ion is
1) $\left|\mathrm{Fc}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{3}\right|^{3}$
3) $\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}, \mathrm{l}^{3}\right.$
(2) $\left[\left.\mathrm{Fe}(\mathrm{Cl})_{6}\right|^{3}\right.$
(4) $\left[\left.\mathrm{Fc}(\mathrm{SC} \mathrm{N})_{\theta}\right|^{3}\right.$

Hast Aggarwal

Numerade Educator

00:50

Problem 164

The number of $\sigma$ and $\pi$-bonds in $\mathrm{Fe}_{2}(\mathrm{CO})_{2}$, respectively, are
(1) $22 \sigma$ and $15 \pi$
(3) 230 and $15 \pi$
(2) $22 \sigma$ and $16 \pi$
(4) $15 \sigma$ and $8 \pi$

Hast Aggarwal

Numerade Educator

01:33

Problem 165

$\Lambda \mathrm{g}^{\prime \dagger}$ forms many complexes, some of these are $\left[\mathrm{Ag}\left(\mathrm{NH}_{3}\right)_{2}\right]^{\mathrm{t}}$, $2\left[\wedge g(\mathrm{CN})_{2}\right]^{\odot} \cdot\left[\Lambda g\left(\mathrm{~S}_{2} \mathrm{O}_{3}\right)_{2}\right]^{3}$
Which of the following statemcnts is true?
(1) In these complexes, $A g^{q}$ is a Lewis base
(2) The hybridisation of $\mathrm{Ag}^{\mathrm{t}}$ is $s p^{2}$
(3) The Ag $^{\oplus}$ complexes are good reducing agents
(4) These complexes are all linear

Hunza Gilgit

Numerade Educator

00:41

Problem 166

Hardness of water is estimated by simple complex formation titration. Complex formed by cation in hard water during estimation of hardness is
(1) $\mathrm{Na}_{2}\left[\mathrm{Ca}\left(\mathrm{PO}_{3}\right)_{6}\right]$
(2) $\mathrm{Na}_{2}[\mathrm{Mg}(\mathrm{ED} \mathrm{TA})]$
(3) $\left[\mathrm{Ca}\left(\mathrm{SO}_{4}\right)_{2}\right]^{2-}$
(4) Na, [PbrEDTA)]

Nidhi Singhi

Numerade Educator

Problem 167

The ligand called $\pi$-acid is
(1) $\mathrm{CO}$
(2) $\mathrm{C}_{2} \mathrm{O}_{4}^{2-}$
(3) $\mathrm{NH}_{3}$
(4) ethylene

Narayan Hari

Numerade Educator

Problem 168

The complex used as an anticancer agent is
(1) mer-[ $\left[\mathrm{co}\left(\mathrm{NH}_{3}\right)_{3} \mathrm{Cl}_{3}\right]$
(3) $\mathrm{Na}_{2}\left[\mathrm{CoCl}_{4}\right]$
(2) $\mathrm{cis}-\left[\mathrm{PtCl}_{2}\left(\mathrm{NH}_{3}\right)_{2}\right]$
(4) $\mathrm{cis}-\mathrm{K}_{2}\left[\mathrm{Pt}\left(\mathrm{Cl}_{2} \mathrm{Br},\right)\right$,

Narayan Hari

Numerade Educator

02:14

Problem 169

Which is uses in cancer chemotherapy?
(1) cis-platin
(3) Both (a) and (b)
(2) Zeisse s salt
(4) None of these

Vishal Sharma

Numerade Educator

02:20

Problem 170

Zeise's salt is
(1) $\operatorname{Cr}\left(\eta^{6}-\mathrm{C}_{6} \mathrm{H}_{6}\right)_{2}$
(2) $\mathrm{Fe}\left(\eta^{5}-\mathrm{C}_{5} \mathrm{H}_{5}\right)_{2}$
(3) $\mathrm{K}\left[\mathrm{Pt}\left(\eta^{2}-\mathrm{C}_{2} \mathrm{H}_{4}\right) \mathrm{Cl}_{3}\right]$
(4) $\mathrm{K}\left[\mathrm{Pt}\left(\mathrm{\eta}^{2}-\mathrm{C}_{2} \mathrm{H}_{4}\right)_{2} \mathrm{Cl}_{2}\right]$

Supratim Pal

Numerade Educator

Problem 171

cis-diamminedichloridoplatinum(11). $\left[\mathrm{Pt}\left(\mathrm{NH}_{3}\right)_{2} \mathrm{C} I_{2}\right]$, is
One of the number of platinum coordination compound is used in the treatment of cancer. Commonly known as cis-platin, this compound has the ability to block the uncontrolled division of cancerous cells that results in the growth of tumours. Recent studies show that sisplatin can cause serious side effects, including sevcre hidney damage. cis-platin is replaced by which ot the following compounds
1)
(2)
(3)
(4)

Narayan Hari

Numerade Educator

Problem 172

Select the incorrect statement about metal carbonyls?
(1) Metal acts as Lewis base as well as Lewis acid
(2) CO acts as Lewis base as well as Lewis acid
(3) $p \pi-p \pi$ back bonding takes place
(4) $p \pi-d \pi$ back bonding takes place

Varsha Aggarwal

Numerade Educator

01:36

Problem 173

The following metal carbonyls are given:
(I) $\left[\mathrm{Mn}(\mathrm{CO})_{6}\right]^{\oplus}$
(II) $\left[\mathrm{Cr}(\mathrm{CO})_{6}\right]$
(III) $\left[\mathrm{V}(\mathrm{CO})_{6}\right]^{\mathrm{E}}$
Which of the following is correct order of CO bond strength in the above complexes
$(1) \mathrm{I}>\mathrm{II}>\mathrm{III}$
(2) III $>\mathrm{II}>\mathrm{I}$
(3) $\mathrm{II}>\mathrm{l}>\mathrm{III}$
(4) III $>\mathrm{I}>\mathrm{II}$

Raghvendra Singh

Numerade Educator

Problem 174

. The following compounds are given:
(I) $[\mathrm{Mn}(\mathrm{CO})]^{\ominus}$
(II) CO
(III) $\mathrm{OC} \rightarrow \mathrm{BH}_{3}$
(IV) $\left[\mathrm{Fe}(\mathrm{CO})_{5}\right]$
Select the correct CO bond order in the given compounds
(1) IV $>\mathrm{III}>\mathrm{I}>\mathrm{II}$
(2) $\mathrm{I}>\mathrm{IV}>\mathrm{III}>\mathrm{II}$
(3) $\mathrm{II}>\mathrm{I}>\mathrm{IV}>\mathrm{III}$
(4) III > II > IV > I

Narayan Hari

Numerade Educator

01:33

Problem 175

The $\pi$-acid ligand which uses its $d$-orbital during synergic bonding is its complex compound is:
(1) $\mathrm{PR}_{3}$
(2) $\mathrm{CO}$
(3) $\mathrm{C}_{6} \mathrm{H}_{6}$
(4) $\mathrm{NO}^{\oplus}$

Hunza Gilgit

Numerade Educator

Problem 176

Which of the following ligand does not act as $\pi$-acid ligand?
(1) $\mathrm{O}_{2}^{2-}$
(2) $\mathrm{C}_{2} \mathrm{H}_{4}$
(3) $\mathrm{N}_{2}$
(4) $\mathrm{CO}$

Hunza Gilgit

Numerade Educator

Problem 177

Select the correct statement about the above given compound
(1) ' $\mathrm{C}-\mathrm{O}$ ' bond is weakest in cation and strongest in anion.
(2) ' $\mathrm{C}-\mathrm{O}$ ' bond is strongest in cation and weakest in anion.
(3) ' $\mathrm{C}-\mathrm{O}$ ' bond is longer in cation than in the anion.
(4) $\left({ }^{4} \mathrm{M}-\mathrm{C}^{\prime}\right) \pi$-bonding is higher in the cation

Varsha Aggarwal

Numerade Educator

00:29

Problem 178

The $\pi$-acid ligand which uses its $d$-orbital during synergic bonding in its complex compound.
(1) NO
(2) $\mathrm{N}_{2}$
(3) $\mathrm{PR}_{3}$
(4) $\mathrm{CN}^{\ominus}$

Ahmed Ali

Numerade Educator

00:49

Problem 179

Which of the following configuration is more stable for the $\left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}$
(1) $t_{2 g}^{6}\left(d_{z^{2}}\right)^{2}\left(d_{x^{2}-y^{2}}\right)^{1}$
(2) $t_{2 g}^{6}\left(d_{z^{2}}\right)^{1}\left(d_{x^{2}-y^{2}}\right)^{2}$
(3) $t_{2 g}^{5}\left(d_{z^{2}}\right)^{2}\left(d_{x^{2}-y^{2}}\right)^{2}$
(4) All

David Collins

Numerade Educator