JEE PYQ: Aldehydes And Ketones Question 36
Question 36 - 2019 (09 Jan Shift 2)
Tests on X: (a) 2,4-DNP: coloured ppt, (b) Iodoform: yellow ppt, (c) Azo-dye: no dye. X is:
(1). ($o$-aminobenzaldehyde)
(2). ($p$-dimethylaminoacetophenone)
(3). ($o$-aminophenyl methyl carbinol)
(4). ($o$-dimethylaminobenzaldehyde)
Show Answer
Answer: (2)
Solution
C=O present (2,4-DNP positive). COCH$_3$ present (iodoform positive). No primary amine (azo-dye negative). The N(CH$_3$)$_2$ group is tertiary amine.
BETA
