NEET 2019 Chemistry Alkynes MCQ Question with Solution

The most suitable reagent for the following conversion is

A

H₂, Pd/C, quinoline

B

Zn/HCl

C

Hg²⁺/H⁺, H₂O

D

Na/liquid NH₃

Option A

The conversion shown is a reduction of an alkyne to a trans-alkene, best achieved by dissolving metal reduction using Na/liquid NH₃.

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CH₃—C≡CH 40% H₂SO₄, 1% HgSO₄ → A Isomerisation → CH₃—C—CH₃

The products for the following reactions are (i) CH₃−C−CH₂−CH₃ + alc. KOH → X (ii) CH₃−CH=CH−CH₂ + O₃ → Y + X

The frequency of recombination between gene pairs on the same chromosome as a measure of distance between genes was explained by:

The reaction of zinc with dilute and concentrated metric acid, respectively, produces: