71.

An organic amino compound reacts with aqueous nitrous acid at low temperature to produce an oily nitroso amine. The compound is

• CH₃NH₂

• CH₃CH₂NH₂

• CH₃CH₂NHCH₂CH₃

• (CH₃CH₂)₃N

The drug used to bring down fever are known as

• analgesic

• antibiotic

• antipyretic

• sulpha drugs

In the reaction sequence

X is

• cyclohexanone

• caprolactum

• HO(CH₂)₆NH₂

• hexamethylene diisocyanate

The property which distinguishes formic acid from acetic acid is

• only ammonium salt of formic acid on heating gives amide

• when heated with alcohol/ H₂SO₄ only acetic acid forms ester

• only acetic acid forms salts with alkali

• only formic acid reduces Fehling's solution

P-cresol reacts with chloroform in alkaline medium to give the compound A which adds hydrogen cyanide to form the compound B. The latter on acidic hydrolysis gives chiral carboxylic acid. The structure of the carboxylic acid is