A) only ammonium salt of formic acid on heating gives amide.
B) when heated with alcohol \[/{{H}_{2}}S{{O}_{4}}\] only acetic acid forms ester.
C) only acetic acid forms salts with alkali.
D) only formic acid reduces Fehling 's solution.
Correct Answer: D
Solution :
We can distinguish between formic acid and acetic acid by their action on Fehling's solution. Formic acid gives a red ppt of cuprous oxide but acetic acid does not give red ppt.
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