Match the following: List I List II 1. CH3 COOH and HCOOCH3 (i) metamers 2. CH3-CH2-C ≡CH and (i

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Match the following: List I List II 1. CH3 COOH and HCOOCH3...

Match the following: List I List II 1. $\mathrm{CH}_{3} \mathrm{COOH}$ and $\mathrm{HCOOCH}_{3}$ (i) metamers 2. $\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{C} \equiv \mathrm{CH}$ and (ii) position isomers $\mathrm{CH}_{3}-\mathrm{C} \equiv \mathrm{C}-\mathrm{CH}_{3}$ 3. $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{NH}_{2}$ and (iii) tautomers $\mathrm{CH}_{3}-\mathrm{CH}\left(\mathrm{NH}_{2}\right)-\mathrm{CH}_{3}$ 4. $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OH}$ and $\left(\mathrm{CH}_{3}\right)_{2} \mathrm{O}$ (iv) functional isomer The correct matching is: $\begin{array}{llll}1 & 2 & 3 & 4\end{array}$ (a) (iii) (iv) (i) (iv) (b) (i) (ii) (iii) (iv) (c) (iii) (ii) (i) (iv) (d) (iv) (ii) (ii) (iv)

Match the following:
List I List II
1. $\mathrm{CH}_{3} \mathrm{COOH}$ and $\mathrm{HCOOCH}_{3}$
(i) metamers
2. $\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{C} \equiv \mathrm{CH}$ and
(ii) position isomers $\mathrm{CH}_{3}-\mathrm{C} \equiv \mathrm{C}-\mathrm{CH}_{3}$
3. $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{NH}_{2}$ and
(iii) tautomers $\mathrm{CH}_{3}-\mathrm{CH}\left(\mathrm{NH}_{2}\right)-\mathrm{CH}_{3}$
4. $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OH}$ and $\left(\mathrm{CH}_{3}\right)_{2} \mathrm{O}$
(iv) functional isomer
The correct matching is:
$\begin{array}{llll}1 & 2 & 3 & 4\end{array}$
(a) (iii)
(iv) (i) (iv)
(b) (i)
(ii) (iii) (iv)
(c) (iii)
(ii) (i) (iv)
(d) (iv)
(ii) (ii) (iv)

Key Concepts

Functional Isomerism

Functional isomerism refers to a type of structural isomerism where compounds have the same molecular formula but contain different functional groups. The change in functional group causes significant differences in the chemical and physical properties of the compounds. This concept is fundamental in organic chemistry because even small changes in functional groups can lead to entirely different reaction pathways and behaviors.

Positional Isomerism

Positional isomerism is a subtype of structural isomerism in which the connectivity of the atoms remains the same, but a functional group or substituent occupies different positions on the same carbon chain skeleton. This variation in location can alter the compounds' chemical reactivity and physical properties while keeping the same molecular formula.

Tautomerism

Tautomerism describes a special case of isomerism where isomers, known as tautomers, exist in equilibrium and readily interconvert via the relocation of a hydrogen atom along with a shift in a double bond. This interconversion often occurs under specific conditions and can have significant implications on reactivity and stability, especially in biochemical processes.

Metamerism

Metamerism is a form of functional isomerism observed in compounds containing a common functional group attached to different alkyl or aryl groups. The variation in the groups attached to the heteroatom results in isomers that, while sharing the same general functional group, exhibit different physical and chemical properties due to the differing carbon frameworks around that group.

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