Q81 / 180 · NEET 2019 (Odisha) · Chemistry

When vapours of a secondary alcohol is passed over heated copper at $573 \mathrm{~K}$, the product formed is

A
a carboxylic acid
B
an aldehyde
Correct answer
C
a ketone
D
an alkene

Solution

When vapours of alcohols are passed over heated copper at $573 \mathrm{~K}$, primary and secondary alcohols undergo dehydrogenation to give aldehydes and ketones, respectively. While tertiary alcohols undergo dehydration to give alkenes.

Thus, option (3) is correct.

Hence, the correct answer is option: 'C'.

More Aldehydes and Ketones Questions

Identify compound X in the following sequence of reactions2020 (Phase 1)Method of preparation for both aldehydes and ketones
A single compound of the structure is obtainable from ozonolysis of which of the following cyclic compounds?2015 (Phase 1)Method of preparation for both aldehydes and ketones
on heating with periodic acid gives2009 (Screening)Method of preparation for both aldehydes and ketones
Which one of the following can be oxidised to the corresponding carbonyl compound?2004Method of preparation for both aldehydes and ketones
Compound P ( ) gives a red orange precipitate with -DNP reagent and it does not reduce Fehling's reagent. On drastic oxidation with chromic 2026 (Cancelled)Tests for aldehyde and ketones
The compound that CANNOT be obtained from the aldol condensation reaction shown below, is2026 (Re-NEET)Chemical reactions for aldehydes and ketones