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Question

Which of the following reagent gives same reduction product when reacts with propionaldehyde and acetone?
  1. NaHg/H2O
  2. LiAlH4
  3. Ni/H2
  4. ZnHg/Conc.HCl

A
LiAlH4
B
NaHg/H2O
C
Ni/H2
D
ZnHg/Conc.HCl
Solution
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ZnHg / Conc. HCl is used to convert carbonyl compound to corresponding alkane.

CH3COCH3+ZnHg/ Conc. HCl CH3CH2CH3

CH3CH2CHO +ZnHg/ Conc. HCl CH3CH2CH3

Option D is correct.

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