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Hydrocarbons question

2017 · Q115
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Hydrocarbons question

2017 · Q115

NEETChemistryHydrocarbonsMCQ+4 / −1
Which one is the correct order of acidity?
  1. A
    CH≡\equiv≡CH > CH3 −-−C≡\equiv≡CH
                        > CH2 === CH2 > CH3−-−CH3
  2. B
    CH ≡\equiv≡ CH > CH2 === CH2
                        > CH3−-−C ≡\equiv≡ CH > CH3 −-−CH3
  3. C
    CH3−-−CH3 > CH2 === CH2
                        > CH3 −-−C ≡\equiv≡ CH > CH≡\equiv≡CH
  4. D
    CH2===CH2 > CH3 −-− CH === CH2
                        > CH3 −-− C≡\equiv≡ CH > CH ≡\equiv≡ CH
View written solutionFree

Correct answer: A

Greater the character of C-atom in hydrocarbons, greater the electronegativity of that carbon and thus greater the acidic nature of the H attached to electronegative carbon.

Thus CH≡\equiv≡CH > CH3 −-−C≡\equiv≡CH
                    > CH2 === CH2 > CH3−-−CH3

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