Which of the following will react at the slowest rate with a nucleophile

Which of the following will react at the slowest rate with a nucleophile
  1. methanal
  2. butanone
  3. 2-pentanone
  4. 3-pentanone

Solution

If the electrophilic character of carbon is considerably reduced, then the reaction will be slow. .

Asked in: JEE-TOPICTESTS-CHEMISTRY

Practice more ALDEHYDES, KETONES AND CARBOXYLIC ACIDS questions on Aicharya