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A carbonyl compound reacts with HCN to f...

A carbonyl compound reacts with HCN to form a cyanohydrin which on hydrolysis forms a racemic mixture of hydroxy acids. The compounds is

A

Formaldehyde

B

Acetaldehyde

C

Acetone

D

Diethyl ketone

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • Cyanohydrin of which of the following forms lactic acid?

    A
    HCHO
    B
    `CH_3COCH_3`
    C
    ` CH_3CHO`
    D
    ` CH_3CH_2CHO`

  • Propyne reacts with HBr to form Z. The compound Z is

    A
    `CH_(2)(Br)CH_(2)CH_(2)Br`
    B
    `CH_(3)CH_(2)CHBr_(2)`
    C
    `CH_(3)CH(Br)CH_(2)Br`
    D
    `CH_(3)CBr_(2)CH_(3)`

  • Cyanohydrin of which compound on hydrolysis will give lactic acid ?

    A
    `C_(6)H_(5)CHO`
    B
    `HCHO`
    C
    `CH_(3)CHO`
    D
    `CH_(3)-CH_(2)-CHO`

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    A compound (X) C_(6)H_(12)O_(6) is oxidised by bromine water into monobasic acid and also reduces Tollens' reagent. It reacts with HCN to give a compound (Y) which on hydrolysis gives a compound (Z).On treating compound (Z) with HI in the presence of red phosphorus n-heptanoic acid is obtained. Compound (X) on treatment with excess phenylhydrazine gave D-glucosazone. The cyclic form of compound (X) is

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    Compound A reacts with PCl_(5) to give B which on treatment with KCN followed by hydrolysis gave acid as the product. What is A?

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