1.

The increasing order of the rate of HCN addition to compounds I to IV is(I) HCHO (II)CH_3COCH_3(III) ph COCH_3 (IV)phCOph

Answer»

`A LT B lt C lt D`
`D lt B lt C lt A`
`D lt C lt B lt A`
`C lt D lt B lt A`

ANSWER :C


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