The compound formed on heating chlorobenzene with chloral in the presence of concentrated sulphuric acid is:

gammexene

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DDT

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freon

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hexachloroethane

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Solution

The correct option is B DDT
When chloral (also known as trichloroacetaldehyde, $C l_{3} C C H O$ ) is treated with chlorobenzene in the presence of a catalytic amount of sulfuric acid, it produces $D D T$ (dichlorodiphenyltrichloroethane).

The reaction is as follows:

$C l_{3} C C H O + 2 C_{6} H_{5} C l \to C l_{3} C C H (C_{6} H_{4} C l)_{2} + H_{2} O$

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