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Kind of structural isomerism between given pairs (chain, position, metamer, functional)

This type of question, asked 8 times: 2021 Paper 9, 25 Jan 2023, 5 Apr 2024, 6 Apr 2024, 28 Jan 2025, 21 Jan 2026 S1, 21 Jan 2026 S2, 6 Apr 2026 S1. All 8 questions below, oldest first.

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  1. Question 1

    2021 Paper 9

    42
    Compound with molecular formula C3H6OC_{3}H_{6}O can show:

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  2. Question 2

    25 Jan 2023

    130
    Match List I with List II
    LIST I (Isomeric pairs)LIST II (Type of isomers)
    A.Propanamine and N-MethylethanamineI.Metamers
    B.Hexan-2-one and Hexan-3-oneII.Positional isomers
    C.Ethanamide and HydroxyethanimineIII.Functional isomers
    D.o-nitrophenol and p-nitrophenolIV.Tautomers
    Choose the correct answer from the options given below:

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  3. Question 3

    5 Apr 2024

    128
    Match List - I with List - II.
    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

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  4. Question 4

    6 Apr 2024

    34
    Which of the following is metamer of the given compound (X)?

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  5. Question 5

    28 Jan 2025

    119
    Given below are two statements : Statement (I): Methylcyclopentane and hex-3-ene are isomeric compounds. Statement (II): Pentan-1-amine and N-ethylpropan-1-amine are functional group isomers. In the light of the above statements, choose the correct answer from the options given below :

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  6. Question 6

    21 Jan 2026 S1

    41
    Identify correct statement 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 :

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  7. Question 7

    21 Jan 2026 S2

    27
    Match List-I with List-II.
    List-I Pair of CompoundsList-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:

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  8. Question 8

    6 Apr 2026 S1

    39
    Given below are two statements : Statement-I : 2, 6-diethylcyclohexanone and 6-methyl-2-n-propylcyclohexanone are metamers. Statement-II : 2, 2, 6, 6-tetramethylcyclohexanone exhibits keto-enol tautomerism. In the light of the above statements, choose the correct answer from the options given below.

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