jee main chemistry important questions | Isomerism In Organic Compounds

Q 1 :

Match List-I with List-II. [2024]

List-I (Pair of Compounds) List-II (Isomerism)

A. n-Propanol and Isopropanol I. Metamerism

B. Methoxypropane and Ethoxyethane II. Chain Isomerism

C. Propanone and Propanal III. Position Isomerism

D. Neopentane and Isopentane IV. Functional Isomerism

Choose the correct answer from the options given below:

List-I (Pair of Compounds)	List-II (Isomerism)
A. n-Propanol and Isopropanol	I. Metamerism
B. Methoxypropane and Ethoxyethane	II. Chain Isomerism
C. Propanone and Propanal	III. Position Isomerism
D. Neopentane and Isopentane	IV. Functional Isomerism

(A)–(III), (B)–(I), (C)–(IV), (D)–(II)
(A)–(I), (B)–(III), (C)–(IV), (D)–(II)
(A)–(III), (B)–(I), (C)–(II), (D)–(IV)
(A)–(II), (B)–(I), (C)–(IV), (D)–(III)

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(1)

Q 2 :

Which of the following is metamer of the given compound (X)? [2024]

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(3)

Metamers are isomers having different nature of alkyl groups across polyvalent functional group.

Q 3 :

The number of different chain isomers for $C_{7} H_{16}$ is _______. [2024]

0%

(9)

Q 4 :

Given below are two statements: [2025]

In the light of the above statements, choose the correct answer from the options given below:

Statement I is false but Statement II is true.
Statement I is true but Statement II is false.
Both Statement I and Statement II are true.
Both Statement I and Statement II are false.

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(3)

Statement I: These are structural isomers (compounds with same molecular formula but different linkage of atoms)

Statement II: Primary, secondary and tertiary amines are functional isomers of each other.

Q 5 :

Identify the correct statements from the following. [2025]

Choose the correct answer from the options given below:

C and D only
B and C only
A and B only
A, B and C only

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(3)

(C) These are homologues

(D) Homologues should have same functional group, primary and secondary amines are treated as different functional groups.

Q 6 :

The total number of structural isomers possible for the substituted benzene derivatives with the molecular formula $C_{9} H_{12}$ is _____. [2025]

0%

(8)

Q 7 :

Match List I with List II [2023]

List I List II

(Isomeric pairs) (Type of isomers)

A. Propanamine and N-Methylethanamine I. Metamers

B. Hexan-2-one and Hexan-3-one II. Positional isomers

C. Ethanamide and Hydroxyethanimine III. Functional isomers

D. o-nitrophenol and p-nitrophenol IV. Tautomers

Choose the correct answer from the options given below:

A-II, B-III, C-I, D-IV
A-III, B-I, C-IV, D-II
A-III, B-IV, C-I, D-II
A-IV, B-III, C-I, D-II

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(2)

Based on definition of positional, functional, metamers and tautomeric form of isomerism.

Q 8 :

Identify correct statements from the following :

A. Propanal and propanone are functional isomers.
B. Ethoxyethane and methoxypropane are metamers.
C. But-2-ene shows optical isomerism.
D. But-1-ene and but-2-ene are functional isomers.
E. Pentane and 2,2-dimethyl propane are chain isomers.

Choose the correct answer from the options given below : [2026]

B, C and D only
A, B and E only
C, D and E only
A, B and C only

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(2)

Q 9 :

Match List - I with List - II.

List – I

Pair of Compounds

List – II

Type of Isomers

A

2-Methylpropene and but-1-ene

I

Stereoisomers

B

Cis-but-2-ene and trans-but-2-ene

II

Position isomers

C

2-Butanol and diethyl ether

III

Chain isomers

D

But-1-ene and but-2-ene

IV

Functional group isomers

Choose the correct answer from the options given below: [2026]

List – I	Pair of Compounds	List – II	Type of Isomers
A	2-Methylpropene and but-1-ene	I	Stereoisomers
B	Cis-but-2-ene and trans-but-2-ene	II	Position isomers
C	2-Butanol and diethyl ether	III	Chain isomers
D	But-1-ene and but-2-ene	IV	Functional group isomers

A-III, B-I, C-IV, D-II
A-III, B-I, C-II, D-IV
A-III, B-I, C-II, D-IV
A-I, B-IV, C-III, D-II

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(2)

Topic Question Set

Q 2 :

Which of the following is metamer of the given compound (X)? [2024]

Q 3 :

The number of different chain isomers for $C_{7} H_{16}$ is _______. [2024]

0%

Q 4 :

Given below are two statements: [2025]

In the light of the above statements, choose the correct answer from the options given below:

Q 5 :

Identify the correct statements from the following. [2025]

Choose the correct answer from the options given below:

Q 6 :

The total number of structural isomers possible for the substituted benzene derivatives with the molecular formula $C_{9} H_{12}$ is _____. [2025]

0%

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	List I		List II
	(Isomeric pairs)		(Type of isomers)
A.	Propanamine and N-Methylethanamine	I.	Metamers
B.	Hexan-2-one and Hexan-3-one	II.	Positional isomers
C.	Ethanamide and Hydroxyethanimine	III.	Functional isomers
D.	o-nitrophenol and p-nitrophenol	IV.	Tautomers