What happens when: (write equations)
(a) Acetone is heated with alkaline solution of Iodine.
(b) Chlorobenzene is heated with chloral in presence of conc $H_{2} S O_{4}$ .
(c) Chlorobenzene is heated with Sodium in presence of ether.
(d) Ethyl bromide is heated with alcoholic $K O H$ .

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Solution

(a) On heating acetone with alkaline solution of Iodine, iodoform is obtained.
(b) When chlorobenzene is heated in presence of conc. $H_{2} S O_{4}$ with chloral, D.D.T. condenses.
(c) When chlorobenzene is heated with sodium metal in presence of ether, diphenyl is produced.
$C_{6} H_{5} C l + 2 N a + C l C_{6} H_{5} E t h e r - -- \to C_{6} H_{5} - C_{6} H_{5} + 2 H_{2} O$
Diphenyl
(d) Ethyl bromide is heated with alcoholic $K O H$ , ethylene is obtained.
$C_{2} H_{5} B r + K O H \to C_{2} H_{4} + K B r + H_{2} O$
Ethylene

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What happens when

(i) n-butyl chloride is treated with alcoholic KOH,

(ii) bromobenzene is treated with Mg in the presence of dry ether,

(iii) chlorobenzene is subjected to hydrolysis,

(iv) ethyl chloride is treated with aqueous KOH,

(v) methyl bromide is treated with sodium in the presence of dry ether,

(vi) methyl chloride is treated with KCN.

c o n c . H_{2} S O_{4}

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