Objective Chemistry for Engineering and Medical Entrance Examinations

K Rama Rao

Chapter 14

Basic Principles, Nomenclature, Purification And Characterization Of Organic Compounds - all with Video Answers

Educators

Chapter Questions

Problem 1

IUP\LambdaC name of $\mathrm{CII}_{3} \mathrm{CII}\left(\mathrm{CII}_{3}\right) \mathrm{COOII}$ is
(1) Dimethyl acetic acid
(2) 2-mcthyl propionic acid
(3) Propionic acid
(4) Butyric acid

Narayan Hari

Narayan Hari

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Problem 2

IUPAC name of $\left(\mathrm{CH}_{3}\right)_{3} \mathrm{C}-\mathrm{CH}=\mathrm{CH}_{2}$ is
(1) $3,3,3$ -Trimethyl-1-propene
(2) $1,1,1$ -Trimethyl-2-butene
(3) 3,3 -dimethyl- 1 -butene
(4) 2,2 -dimethy $1-3$ -butene

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Problem 3

IUP\LambdaC name of $\mathrm{CII}_{2}=$ CII $\mathrm{CII}\left(\mathrm{CII}_{3}\right)_{2}$ is
(1) 1,1 -dimethyl- 2 - propene
(2) 3 -methyl- 1 -butene
(3) 2-vinyl propane
(4) I-isopropyl ethylene

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Problem 4

IUP $\Lambda$ C name of $\mathrm{CII}_{3} \mathrm{CHCl}_{2}$ is
(1) 1,2 -dichloro cthanc
(2) 2,2 -dichloro cthanc
(3) 1,1 -dichlorocthanc
(4) Dichlorocthanc

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Problem 5

IUP $\Lambda$ C name of $\mathrm{CII}_{3} \mathrm{CHCl}_{2}$ is
(1) 1,2 -dichloro cthanc
(2) 2,2 -dichloro cthanc
(3) 1,1 -dichlorocthanc
(4) Dichlorocthanc

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Problem 6

The IUPAC name of the compound
<smiles>CCC(C)C(N)=O</smiles>
(1) 2 -ethyl butanamide
(2) 2 -methyl butanamide
(3) I-amino-2-methyl propane
(4) None

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Problem 7

IUP\LambdaC name of $\mathbf{C H}_{3}\left(\mathbf{C H}_{2}\right)_{4}-\mathbf{C H}-\mathbf{C}-\mathbf{C H}_{2}-\mathrm{CH}_{3}$ is
(1) 3,4 -dimethyl- $3-n$ -propyl nonane
(2) 4 -ethyl-4,5-dimethyl decane
(3) 6,7 dimethyl- $7-n$ -propyl nonane
(4) 6,7 -dimethyl-7-diethyl decane

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Problem 8

The IUP\LambdaC name of the compound having the structure
<smiles>CCC(C)CC(O)CCl</smiles>
(1) 1 -chloro-4-methyl-hexanal-2
(2) 1 -chloro-4-cthyl -2-pentanol
(3) 1-chloro-4-methyl-2-hexanol
(4) 1 -chloro-2-hydroxy-4-methyl hexanc

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Problem 9

IUPAC name for $\left(\mathrm{CH}_{3}\right)_{2} \mathrm{CHCH}_{2} \mathrm{CH}_{2} \mathrm{Cl}$
(1) 1 -chloro pentane
(2) isopentyl chloride
(3) 2-methyl-4 -chloro butane
(4) 1 -chloro- 3 -methyl butane

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Problem 10

IUPAC name of
(1) 2-methyl pentyl alcohol
(2) 4 -methyl- 3 -pentene-1-ol
(3) 2 -methyl pent-2-en-1-ol
(4) 4 -methyl pentyl alcohol

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Problem 11

IUP\LambdaC name of
<smiles>CCO</smiles>
<smiles>CCCCC(C)C</smiles> is
(1) 4 -butyl-2,5-hexadiene- $1-\mathrm{al}$
(2) 5-vinyl oct-3-en-1-al
(3) 5-vinyl oct-5-en-8-al
(4) 3 -butyl- 1,4 -hexadiene-6-al

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Problem 12

The IUP\LambdaC name of the compound
is
(1) 2 -methyl pent- 1 -en- $\mathbf{4}$ -yne
(2) 4 -methyl pent-4-en-1-yne
(3) 2 -methyl pent-2-en-4-yne
(4) 4 -methyl pent- 3 -en- 1 -yne

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Problem 13

Isobutyl chloride is
(1) $\mathrm{CII}_{3} \mathrm{CII}_{2} \mathrm{CII}_{2} \mathrm{CII}_{2} \mathrm{Cl}$
(2) $\left(\mathrm{CII}_{3}\right)_{2} \mathrm{CIICII}_{2} \mathrm{Cl}$
(3) $\mathrm{CII}_{3} \mathrm{CII}_{2} \mathrm{CIIClCII}_{3}$
(4) $\left(\mathrm{CIl}_{3}\right)_{3} \mathrm{C} \mathrm{Cl}$

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Problem 14

The IUPAC name of 4 -hydroxy- 1 -methyl pentanal
(1) 4 -hydroxy- 1 - methyl pentanal
(2) 4-hydroxy-2-methyl pentanal
(3) 3-hydroxy-2-methyl pentanal
(4) 3 -hydroxy-3-methyl pentanal

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Problem 15

IUP\LambdaC name of
(1) 2 -chloromethyl-4-methyl-hexanal
(2) 1-chloro-4-cthyl-2-pentanal
(3) 1-chloro-4-methyl-2-hexanal
(4) 1 -chloro-2-aldo-4-methyl hexanc

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Problem 16

IUPAC name of $\mathbf{C H}_{3}-\mathrm{O}-\mathrm{C}_{2} \mathrm{H}_{5}$ is
(1) Methoxy cthanc
(2) Ethoxy methane
(3) Mcthyl ethyl cther
(4) Ethyl methyl ether

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Problem 17

2-methy $1-2$ -butene will be represented as
(1)
<smiles>CCC(C)C</smiles>
(2)
<smiles>CCC(C)C(C)C</smiles>
(3)
<smiles>CCC(C)CC</smiles>
(4)

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Problem 18

IUPAC name of
<smiles>C=C(CC)C(C)C=CC</smiles>
(1) 2 -ethyl- 3 -methyl-hexa-1-en-4-yne
(2) S-ethyl-4-methyl-hexa-2-yne-5-ene
(3) 3-methyl-4-methyl hepta-5-ene
(4) 5 -methylene- 5 -ethyl-4-methyl hepta- 2 -yne

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Problem 19

IUP\LambdaC name of $\left(\mathrm{CII}_{3}\right)_{2} \mathrm{~N} \quad \mathrm{C}_{2} \mathrm{II}_{5}$ is
(1) Dimethyl cthyl amine
(2) Dimethyl amino cthanc
(3) Dimethyl amino methane
(4) N, N-dimethyl amino cthane

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Problem 20

The name of the compound $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{COCH}_{3}$ is
(1) 2-pentanonc
(2) pentanonc-2
(3) pentan-2-onc
(4) $\Lambda$ ll are correct

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Numerade Educator

Problem 21

Which of the following IUPAC name is correct?
(1) 2-methyl-3-ethyl pentane
(2) 2 -ethyl- 3 -methyl pentane
(3) 3 -ethyl-2-methyl pentane
(4) 3 -methyl-2-ethyl pentane

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Numerade Educator

Problem 22

IUPAC name of the compound
(1) $1,2,3$ -tricyano propane
(2) 2 -cyano pentane- 1,3 -dinitrile
(3) 2 -cyano propane
(4) propane tricarbyl amine

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Problem 23

Number of tcrtiary carbon atoms in tcrtiary butyl alcohol is
(1) I
(2) 2
(3) zero
(4) 4

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Problem 24

How many primary carbon atoms are there in the compound
(1) 6
(2) 2
(3) 4
(4) 3

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Problem 25

The name of the hydrocarbon with the following skeleton
(1) 4-mcthyl-5-cthyl heptanc
(2) 3-cthyl-4-methyl heptanc
(3) 3 -isopentyl heptanc
(4) isodccanc

Narayan Hari

Numerade Educator

Problem 26

The IUPAC name of the compound
(1) 1,2,3-trihydroxy propane
(2) 3 -hydroxy pentane-1,5-diol
(3) $1,2,3$ -hydroxy propane
(4) propane-1,2,3-triol

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Numerade Educator

Problem 27

IUP\LambdaC name of
<smiles>CCC(C)c1ccccc1</smiles>
(1) 2-cyclo-hexyl butane $\quad$ (2) 2-phenyl butane
(3) 3-cyclohexyl butane
(4) 3-phenyl butane

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Problem 28

The IUP\LambdaC name of $\left(\mathrm{CII}_{3}\right)_{2} \mathrm{CII} \mathrm{CII}_{2} \mathrm{CO} \mathrm{CII}_{2} \mathrm{CII}\left(\mathrm{CII}_{3}\right)_{2}$ is
(1) 2,4-dimcthyl cyclohexanone
(2) 2,6 -dimcthyl heptanone-4
(2) 2,6 -dimethyl hexanone-6
(4) 2,6 -dimcthyl heptanone- 5

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Problem 29

3 -methyl pent-1,3-diene is
(1) $\mathrm{CH}_{2}=\mathrm{CH}\left(\mathrm{CH}_{2}\right)_{2} \mathrm{CH}_{3}$
(2) $\mathrm{CH}_{2}=\mathrm{CHCH}\left(\mathrm{CH}_{3}\right) \mathrm{CH}_{2} \mathrm{CH}_{3}$
(3) $\mathrm{CH}_{3} \mathrm{CH}\left(\mathrm{C}\left(\mathrm{CH}_{3}\right) \mathrm{CH} \mathrm{CH}_{2}\right.$
(4) $\mathrm{CH}_{3} \mathrm{CHClC}\left(\mathrm{CH}_{3}\right)_{3}$

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Problem 30

The formula of cthanc nitrilc is
(1) $\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{NC}$
(2) $\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{CN}$
(3) $\mathrm{CH}_{3} \mathrm{CN}$
(4) None

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Numerade Educator

Problem 31

The number of $4^{\circ}$ carbon atoms in $2,2,4,4$ -tetramethyl pentane is
(1) 1
(2) 2
(3) 3
(4) 4

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Numerade Educator

Problem 32

The given compound in IUP\LambdaC may be called
<smiles>CCC(N)CC(C)=O</smiles>
(1) Diacetone
(2) Acetone amine
(3) Diacetone amine
(4) 4 -amino-4-methyl pentan-2-one

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Problem 33

The number of linear carbon atoms in hexyne molecule is
(1) 2
(2) 3
(3) 4
(4) 5

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Problem 34

The IUP\LambdaC name of the compound $\mathrm{CII}_{3} \mathrm{~N}=\mathrm{C}$
(1) Ethane nitrile
(2) Methane isonitrile
(3) Ethane isonitrile
(4) None

Kajal Gautam

Numerade Educator

Problem 35

Formula of phenyl carbinol and chloral are respectively
(1) $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{OH}$ and $\mathrm{CHCl}_{2} \mathrm{CHO}$
(2) $\mathrm{C}_{6} \mathrm{H}_{3} \mathrm{CH}_{2} \mathrm{OH}$ and $\mathrm{CCl}_{3} \mathrm{CHO}$
(3) $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{OH}$ and $\mathrm{CH}_{2} \mathrm{ClCHO}$
(4) $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CHO}$ and $\mathrm{CHCl}_{2} \mathrm{CHO}$

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Problem 36

IUPAC name of urea is
(1) Diamino ketone
(2) I-amino ethanamide
(3) 1 -amino methanamide
(4) amino acetamide

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Numerade Educator

Problem 37

The correct IUP\LambdaC name of acctonitrilc is
(1) cyanomethane
(2) 2-ketopropane nitrile
(3) methane nitrile
(4) ethane nitrile

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Numerade Educator

Problem 38

A student named the compound as 1,4 -butadicne
(1) The name is correct
(2) IIc or she committed an error in the selection of carbon chain
(3) IIc or she committed an crror in the position of double bond
(4) Unpredictable

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Problem 39

The IUPAC name
(1) 1 -Amino prop-2-enal
(2) 3-Amino prop-2-enal
(3) 1 -Amino-2-formyl ethene
(4) 3-Amino-1-oxoprop-2-ene

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Numerade Educator

Problem 40

An olefin "X" undergoes ozonalysis reaction to yield acctone and formaldehyde as the products. The IUP\LambdaC name of the olefin $\mathrm{X}$ is
(1) I-methyl prop-2-ene
(2) 2 -methyl prop-2-ene
(3) 3-methyl prop-2-ene
(4) 2 -methyl prop-1-ene

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Numerade Educator

Problem 41

$\begin{array}{lllll}\mathrm{CII}_{3} & \mathrm{CII}=\mathrm{CII} & \mathrm{ClI}_{2} & \text { CII } \mathrm{CII}_{2} \text { COOII }\end{array}$
(1) 5-amino-2-heptenoic acid
(2) $\beta$ -amino-\delta-heptenoic acid
(3) 5 -amino-hex $-2$ -cnc-carboxylic acid
(4) 3 -amino-5-heptenoic acid

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Problem 42

Which is the correct chemical formula for 1,2 -dichloro tetrafluoro ethane?

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Problem 43

In the structure
<smiles>CC(C)(C)C(C)(C)C</smiles> the
number of carbons are
(1) one primary, two secondary and one tertiary
(2) four primary, two tertiary and onc sccondary
(3) one primary, onc secondary, one tertiary and one quaternary
(4) five primary, onc sccondary, onc tertiary and one quaternary

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Problem 44

The alkane which contains only primary hydrogen atom is
(1) pentane
(2) isopentane
(3) neopentane
(4) 2,2 -dimethyl butane

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Numerade Educator

Problem 45

In which of the following compounds the carbon atoms has been correctly numbered?
(1) 21
<smiles>[C-]</smiles> $\mathrm{CII}_{2} \quad \mathrm{CII}_{3}$
(2)
<smiles>CCCC</smiles> $\begin{array}{ll}\text { (3) } 5 & 4\end{array}$
(4)

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Problem 46

Which one is the correct statement?
(1) IUPAC names are based on the structure of compounds.
(2) Common names are based on the structure of compounds.
(3) IUPAC name of HCOOH is formic acid.
(4) Common name of $\mathrm{HC} \equiv \mathrm{CH}$ is ethyne.

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Problem 47

IUPAC name of
<smiles>C=C(CC)C(=C)CC</smiles> is
(1) 3,4 -dimethyl hexane
(2) 2-cthyl, 3-methyl, 1-pcntene
(3) 2,3 -dicthyl 1,3 -butadicne
(4) 2,3 -dicthyl, 1 -butene

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Problem 48

IUPAC name of neopentyl chloride is
(1) 2 -chloro-2-methyl propane
(2) I-chloro-2,2-dimethyl propane
(3) 3 -chloro-2,2-dimethyl propane
(4) 2 -chloro-2-methyl pentane

Narayan Hari

Numerade Educator

Problem 49

$\mathrm{CH}_{2}$
has IUPAC name
<smiles>CCC(C)C(C)C</smiles>
(1) 2 -isopropyl butene-1
(2) 2 -methyl, 3 -ethyl, butene-3
(3) 2 -ethyl, 3 -methyl butene-1
(4) Ethyl isopropyl ethene

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Problem 50

Which of the following is the correct IUPAC name?
(1) 3-methyl-2-ethyl pentane
(2) 3-pentyne
(3) ethyl-1-butene
(4) Hexabromo ethane

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Numerade Educator

Problem 51

The decreasing ordcr of the priority of functional groups is
(1) $\mathrm{COO} \mathrm{I}>\mathrm{COCl}>\mathrm{CIIO}>\mathrm{CN}$
(2) $\mathrm{COOII}>\mathrm{CIIO}>\mathrm{COCl}>\mathrm{CN}$
(3) COOII $>$ CIIO $>$ CN $>$ COCl
(4) $\mathrm{COOII}>\mathrm{CN}>\mathrm{ClIO}>\mathrm{COCl}$

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Numerade Educator

Problem 52

Which of the following contains only $1^{\circ}$ and $3^{\circ}$ carbon atoms?
(1) n-butanc
(2) isobutanc
(3) isopentane
(4) neopentanc

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Numerade Educator

Problem 53

The IUPAC name of the given structure is
<smiles>CCC1CCC1(CC)CC</smiles>
(1) 3,3 -Dimethyl pentane
(2) 3,3-Diethy] pentane
(3) 3 -ethyl- 3 -methyl pentane
(4) 3 -ethyl- 3 -ethyl pentane

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Numerade Educator

Problem 54

IUP\LambdaC name of the given structure is
<smiles>CC(C)C</smiles>
(1) 2,2 -dimcthyl butane
(2) isohexanc
(3) 2,3 -dimcthyl butanc
(4) diisohexanc

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Numerade Educator

Problem 58

The IUPAC name of the given compound
<smiles>CCCCC1CCCC1CC</smiles>
(1) octyl cyclopentanc
(2) 3 -cyclopentyl octanc
(3) cyclopentane octanes
(4) 6-cyclopentyl octanc

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Problem 59

IUPAC name of
<smiles>C1CCC2(C1)CC2</smiles>
(1) Bicyclo $|5,5,0|$ nonane
(2) Biphenyl
(3) Cyclopropyl cyclohexane
(4) Spiro $|5,2|$ octane

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Problem 60

Structure of bicyclo $[1,1,0]$ butanc is
a.
b.
c.
d.

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Problem 61

When two halogen atoms are linked to same carbon atom the dihaloalkanc is called
(1) alkylidene halidc
(2) alkylenc dihalide
(3) alkyl halide
(4) alkane dihalide

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Problem 62

IUPAC name of the compound for
<smiles>BrC1CCC(C2CCC(Br)CC2)CC1</smiles> is
(1) $4,4^{\prime}-$ dibromo $-1,1^{\prime}$ -dicyclohexyl
(2) $4,4^{\prime}-$ dibromo $-1,1^{\prime}$ -bicyclohexane
(3) I-bromo-4-(4'-bromo) bicyclohexane
(4) None of these

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Problem 63

IUPAC name of is
<smiles>O=CC1CCC(C(=O)O)CC1</smiles>
(1) 4-oxobcnzoic acid
(2) 4 -formyl benzoic acid
(3) 4 -formyl cyclohcxanc carboxylic acid
(4) None of thesc

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Numerade Educator

Problem 64

Vinyl carbinol is
(1) IIO $\mathrm{CH}_{2} \mathrm{CH}=\mathrm{CII}_{2}$
(2) $\mathrm{CII}_{3} \mathrm{CH}(\mathrm{OH})=\mathrm{CII}_{2}$
(3) $\mathrm{CII}_{3}$ CII=CII OII
(4) $\mathrm{CII}_{3} \mathrm{C}\left(\mathrm{CII}_{2} \mathrm{OH}\right)=\mathrm{CII}_{2}$

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Problem 65

The IUPAC name of acraldehyde is
(1) prop-2-en-1-al
(2) propenylaldehyde
(3) but-2-en-1-al
(4) propanal

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Numerade Educator

Problem 66

IUP\LambdaC name for the compound
<smiles>CCC(I)=C(C)Cl</smiles> is
(1) trans-2-chloro-3-iodopentenc-2
(2) cis-2-chloro-3-iodo-2 pentenc
(3) trans-3-iodo-4-chloro-3-pentenc
(4) cis-3-iodo-4-chloro-3-pentene

Narayan Hari

Numerade Educator

Problem 67

An organic compound $\mathrm{X}$ (molecular formula, $\left.\mathrm{C}_{6} \mathrm{H}_{7} \mathrm{O}_{2} \mathrm{~N}\right)$ has six carbon atoms in a ring system, two double bonds and a nitro group as substituent $\mathrm{X}$ is
(1) Homocyclic but not aromatic
(2) Aromatic but not homocyclic
(3) Homocyclic and aromatic
(4) Heterocyclic and aromatic

Kajal Gautam

Numerade Educator

Problem 68

The IUPAC name of
<smiles>CCC(C)CC(=O)Cl</smiles>
(1) 2,3 -dimethyl pentanoyl chloride
(2) 3,4 -dimethyl pentanoyl chloride
(3) I-chloro-1-oxo-2,3-dimethyl pentane
(4) 2 -ethyl-3-methyl butanoyl chloride

Narayan Hari

Numerade Educator

Problem 69

The IUP\LambdaC name of the compound
(1) 3-bromo-1-chlorocyclohexane
(2) I-bromo- 3 -chlorocyclohexane
(3) 2 -bromo-6-chlorohex $-1$ -ene
(4) 6 -bromo-2-chlorocyclohexene

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Numerade Educator

Problem 70

Names of some compounds arc given, which one is not in IUP\LambdaC system
(1)
<smiles>CCCC(CC)C(C)CC</smiles> 3-methyl-4-ethylheptane
(2)
<smiles>CC(C)C(C)O</smiles> 3-methyl-2-butanol
(3)
<smiles>CCC(C)C(CC)CC</smiles> 2-ethyl-3-methyl- 1 -ene
(4) $\mathrm{CH}_{3}-\mathrm{C} \equiv \mathrm{C}-\mathrm{C}\left(\mathrm{CH}_{3}\right)_{2}$
4-methyl-2-pentyne

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Numerade Educator