Question

An organic compound (X) with molecular formula C₉H₁₀O gives positive 2, 4-DNP and Tollen's test It undergoes Cannizarro reaction and on vigorous oxidation, it gives 1, 4-Benzenedicarboxylic acid. Compound (X) is:

Options

• Benzaldehyde

• o - methyl benzaldehyde

• p - ethyl benzaldehyde

• 2, 2 - dimethyl hexanal

Answer 1

p - ethyl benzaldehyde

Explanation:

(i) 2, 4-DNP test `->` carbonyl group present

(ii) Tollen's test `->` aldehyde group present

(iii) Cannizzaro reaction `->` No α-hydrogen present

(iv) Given 1, 4-Benzenedicarboxylic acid means benzene with 1, 4 substitution is present in which one group is aldehyde.