________ is used in the preparation of chloroform, sulphonal, cordite etc.

formalin

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ethyl alcohol

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acetone

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none of these

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Solution

The correct option is C acetone
Preparation of chloroform from acetone is:
$C a O C l_{2} + H_{2} O ⟶ C a (O H)_{2} + C l_{2}$
$C H_{3} C O C H_{3} + 3 C l_{2} ⟶ C C l_{3} C O C H_{3} + 3 H C l$
$2 C C l_{3} C O C H_{3} + C a (O H)_{2} ⟶ 2 C H C l_{3} + (C H_{3} C O O)_{2} C a$
Preparation of sulphonal from ketone is shown in IMAGE $01$
Preparation of cordite is shown in Image $02$
Cordite is a propellant which is addition product of ketone.
Hence, above all are prepared from acetone.

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