Question
Which of the following reactions is preferentially used to prepare the corresponding paraffins from alkanone?
MHT CET
Chemistry
Aldehydes and Ketones
2026
MHT CET 2026 (20 April Shift 2)
MHT CET Chemistry Question (2026) — Solution
Options
- A. Clemmensen reduction
- B. Etard reaction
- C. Rosenmund reduction
- D. Haloform reaction
Answer
A. Clemmensen reduction
Step-by-step solution
Alkanones (ketones) are reduced to the corresponding paraffins (alkanes) by Clemmensen reduction. In this reaction, the carbonyl group (>C=O) is converted into a methylene group (>CH_2) using zinc amalgam (Zn-Hg) and concentrated hydrochloric acid (HCl). Etard reaction is used to oxidize toluene to benzaldehyde. Rosenmund reduction is used to convert acid chlorides into aldehydes. Haloform reaction is used to convert methyl ketones into a haloform and a carboxylic acid salt. Answer: Clemmensen reduction
Related: Chemistry — Aldehydes and Ketones · All PYQ Banks