NTA Abhyas JEE Main2020ChemistryAldehydes and KetonesPractice
The appropriate reagent for the transformation
Options
- AZn(Hg), HCl
- BN H 2 N H 2 , O H -
- CH 2 / N i
- DN a B H 4
Correct answer
B. N H 2 N H 2 , O H -
Step-by-step solution
Both Zn(Hg), HCl (Clemmenson’s reduction) and N H 2 N H 2 , O H - (Wolf-Kishner reduction) can reduce - C | | O - C H 3 to - C H 2 - C H 3 group but as HCl may also bring about the dehydration of alcohol to give an alkene so the most appropriate reagent will be N H 2 N H 2 , O H - .