Multiple choice

Acetaldehydes are polymerized in the presence of conc. sulphuric acid to form

  1. metaformaldehydes

  2. paraformaldehydes

  3. paraldehydes

  4. mysitylene

  5. crotonaldehyde
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This option is correct because when the polymerization of acetaldeydes is done in the presence of conc. sulphuric acid, it forms paraldehydes. It gives a pleasant smelling liquid and this is used in medicine as a hypnotic.

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