Chemistry Aldehydes & Ketones DUHS 2024
PMDC Verified Question 7 of 94
Aldehydes & ketones can be converted to alkane. This reaction is called:
A
Ozonolysis
B
Grignard-Craft reaction
C
Wolff-Kishner reaction
D
Friedel-Craft reaction
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Wolff-Kishner reaction
Concept:

The complete removal of the carbonyl oxygen to form a saturated hydrocarbon (alkane) requires specialized deoxygenation reactions.

Solution:

  • Among the choices provided, the Wolff-Kishner reaction is the only one designed to reduce a carbonyl group to an alkane.


  • It achieves this by first reacting the carbonyl with hydrazine to form a hydrazone, which is then decomposed in the presence of a strong base and heat to release nitrogen gas and yield the alkane.


Why other options are incorrect:

Ozonolysis cleaves alkenes to form aldehydes/ketones (the reverse logic). Grignard reactions form alcohols. Friedel-Crafts reactions attach alkyl/acyl groups to aromatic rings.

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