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WBCS Preliminary Examination 2017 — General Studies · Question 118 of 200

Q118
General ScienceChemistry
The fastest $S_N1$ reaction is of the following:
  1. a.$MeO\text{-}CH_2\text{-}Cl$
  2. b.$Me\text{-}CH_2\text{-}Cl$
  3. c.$Me\text{-}C(=O)\text{-}CH_2\text{-}Cl$
  4. d.$Ph\text{-}CH_2\text{-}CH_2\text{-}Cl$

Answer: (C) $Me\text{-}C(=O)\text{-}CH_2\text{-}Cl$

The printed key selects option (C), chloroacetone, per the source's answer key.

Q117 Whole paperQ119