Question

Which organic compound can reduces Tollen's reagent?

• A. Oxalic acid
• B. Citric acid
• C. Acetic acid
• D. Formic acid

Answer 1

Answer: (D)

Formic acid resemble with aldehyde due to its structure so it reduce Tollen’s reagent.
$\underset{\text{Aldehydic structure}}{\text{H}-\stackrel{\underset{||}{O}}{C}-\text{OH}}$