Q42 / 150 · MHT CET 2026 (15 April Shift 2) · Chemistry
Which of following on oxidation forms propanone?
- A1-Propanol
- Correct answerB2-Propanol
- C2-Butanol
- D2- methylbutan-1-ol
Solution
Oxidation of secondary alcohols yields ketones.
2-Propanol is a secondary alcohol containing three carbon atoms. Upon oxidation with common oxidizing agents like acidic $K_2Cr_2O_7$ or $KMnO_4$, it forms propanone (acetone).
$CH_3-CH(OH)-CH_3 \xrightarrow{[O]} CH_3-CO-CH_3 + H_2O$
1-Propanol is a primary alcohol and oxidizes to propanal, which further oxidizes to propanoic acid.
2-Butanol oxidizes to 2-butanone.
2-methylbutan-1-ol oxidizes to 2-methylbutanoic acid.
Answer: 2-Propanol
2-Propanol is a secondary alcohol containing three carbon atoms. Upon oxidation with common oxidizing agents like acidic $K_2Cr_2O_7$ or $KMnO_4$, it forms propanone (acetone).
$CH_3-CH(OH)-CH_3 \xrightarrow{[O]} CH_3-CO-CH_3 + H_2O$
1-Propanol is a primary alcohol and oxidizes to propanal, which further oxidizes to propanoic acid.
2-Butanol oxidizes to 2-butanone.
2-methylbutan-1-ol oxidizes to 2-methylbutanoic acid.
Answer: 2-Propanol
Hence, the correct answer is option: 'B'.