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8.1. Aldehydes and ketones — Chemistry STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceChemistry8.1. Aldehydes and ketones1 Mark
MCQ
The tests performed on compound $X$ and their inferences are

Test Interference
$(a)$ $2, 4-DNP$ test Colorued precipitate
$(b)$ Iodoform test Yellow precipitate
$(c)$ Azo-dye test No dye formation

Compound $‘X’$ is

  • A

  • ✓

  • C

  • D

✓

Answer

Correct option: B.

b
$\because  \,\,-COCH_3$ is present it will show both $2, 4-DNP$ and iodoform test. Due to steric inhibition of resonance. $I.P$ of $‘N’$ is not involved in delocalization so coupling reaction will not take place.

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