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JEE Main 202124 FebruaryEvening Shift
Exam
JEE Main
Year
2021
Date
24 February
Shift
Evening Shift
Subject
Chemistry
Chapter
Aldehydes and Ketones

JEE Main 2021 · 24 February · Evening Shift · Chemistry · Aldehydes and Ketones

Which one of the following carbonyl compounds cannot be prepared by...

Which one of the following carbonyl compounds cannot be prepared by addition of water on an alkyne in the presence of HgSO4{HgSO}_{4} and H2SO4?{H}_{2}{SO}_{4} ?Which one of the following carbonyl compounds cannot be prepared by addition of water on an alkyne in the presence ofWhich one of the following carbonyl compounds cannot be prepared by addition of water on an alkyne in the presence ofWhich one of the following carbonyl compounds cannot be prepared by addition of water on an alkyne in the presence ofWhich one of the following carbonyl compounds cannot be prepared by addition of water on an alkyne in the presence ofWhich one of the following carbonyl compounds cannot be prepared by addition of water on an alkyne in the presence ofWhich one of the following carbonyl compounds cannot be prepared by addition of water on an alkyne in the presence of

Options

  1. AA mixture of hydrogen and oxygen contains 40 % hydrogen by mass when the pressure is 2 . 2 bar. The partial pressure of
  2. BA mixture of hydrogen and oxygen contains 40 % hydrogen by mass when the pressure is 2 . 2 bar. The partial pressure of
  3. CA mixture of hydrogen and oxygen contains 40 % hydrogen by mass when the pressure is 2 . 2 bar. The partial pressure of
  4. DA mixture of hydrogen and oxygen contains 40 % hydrogen by mass when the pressure is 2 . 2 bar. The partial pressure of

Correct answer

A. A mixture of hydrogen and oxygen contains 40 % hydrogen by mass when the pressure is 2 . 2 bar. The partial pressure of

Step-by-step solution

Reaction of HgSO4/dil.H2SO4{HgSO}_{4} / dil . {H}_{2}{SO}_{4} with alkyne gives addition of water as per markonikoff's rule.


CH≡CH→H2OHgSO4,H2SO4CH3CHOCH ≡ CH\mathop{\to}_{{H}_{2}O}^{{HgSO}_{4,}{H}_{2}{SO}_{4}}{CH}_{3}CHO

Hence, by this process preparation of CH3CH2CHO{CH}_{3}{CH}_{2}CHO
Cann't possible.

Which one of the following carbonyl compounds cannot be prepared by addition of water on an alkyne in the presence of

Hence CH3−CH2−CHO{CH}_{3} - {CH}_{2} - CHO cannot be formed.

Which one of the following carbonyl compounds cannot be prepared by addition of water on an alkyne in the presence of

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