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381. Give one important uses of each of the following:
(i) BHC (ii) Freon (iii) D.D.T.

Uses of the following:

i) BHC (benzene hexachloride) is a important agricultural pesticide mainly used for exterminating white ants, leaf hopper, termite, etc.

ii) Feron are usually used in refrigeration and air conditioning purposes.

iii) D.D.T. (Dichlorophenyltrichloroethane) used as to control pesticides or insect.

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382.

Complete the following reactions:

$bold CH subscript bold 3 bold CH subscript bold 2 bold CH subscript bold 2 bold Br bold space bold rightwards arrow with bold alc bold. bold space bold KOH on top$

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383.

Complete the following reactions:

$bold CH subscript bold 3 bold Br bold rightwards arrow from bold KOH to bold H subscript bold 2 bold O bold divided by bold H to the power of bold plus of$