Chemistry Aldehydes & Ketones MDCAT 2012
PMDC Verified Question 88 of 94
With acidified \( Na_2Cr_2O_7 \), what the product will be, when secondary alcohols are oxidized in same conditions?
A
Alkenes
B
Alkyl halides
C
Alkynes
D
Ketones
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: Ketones
Concept:

The oxidation of alcohols depends on their substitution class (primary, secondary, or tertiary).

Solution:

  • Primary alcohols oxidize to aldehydes, and then further to carboxylic acids.


  • Secondary alcohols contain a \( >CH-OH \) group.


  • When treated with a strong oxidizing agent like acidified Sodium Dichromate (\( Na_2Cr_2O_7 \) / \( H_2SO_4 \)), secondary alcohols lose two hydrogen atoms to form a carbon-oxygen double bond, yielding a ketone.


Why other options are incorrect:

Alkenes are formed via dehydration, not oxidation. Alkyl halides require substitution with halogens. Alkynes require elimination of dihalides.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

Previous Question All Aldehydes & Ketones MCQs Next Question

Want to solve full-length papers under timed exam conditions?

Practice with zero-scroll lockdown sprints, dynamic latency zone timers, live peer selection telemetry, and the automated Amber mistake recovery loop.

Enter Arena Sprint iOS App Android App