How will you make (obtain) from chloroform:
(a) Chloretone
(b) Phenyl Isocynide
(c) Acetylene
(d) Salicaldehyde

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Solution

(a)Chloretone from chloroform: Chloroform reacts with acetone in the presence of bass.
(b) Phenyl isocyanides from Chloroform: When chloroform reacts with primary amine example aniline, ethyl amine in presence of alcoholic potassium hydroxide with the production of a bad persistent small compound known as phenyl isocyanide (carbylamine reaction) is formed.

$C_{6} H_{5} N H_{2} + C H C l_{3} + 3 K O H \to C_{6} H_{5} N C + 3 K C l + 3 H_{2} O$
(c) Acetylene from chloroform: When chloroform is heated with silver powder, acetylene is produced.
(d) Salicylaldehyde from chloroform: When chloroform is heated with phenol and alcoholic $K O H$ O-salicylaldehyde is produced.

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