JEE Main Chemistry question

Chemistry Aldehydes, Ketones and Carboxylic Acids JEE Main

An organic acid, when heated strongly with P₂O₅, gave rise to a colourless gas which burns with a pale blue flame. The acid is:

(A)Acetic acid
(B)Formic acidCorrect
(C)Formalin
(D)Benzoic acid

Answer: (B)

Solution

P₂O₅ is a powerful dehydrating agent; it dehydrates formic acid to carbon

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Question ID VK-150009