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Question

Naphthalene balls used to repel moths and other insects are obtained from X. These days Y, a petroleum product is used in place of X for metalling the roads. What are X and Y respectively?

A
Coke, coal
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B
Coal, coke
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C
Bitumen, coal tar
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D
Coal tar, bitumen
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Solution

The correct option is D Coal tar, bitumen
Naphthalene balls used to repel moth and other insects are also obtained from coal tar. These days bitumen, a petroleum product is used in place of coal tar for metalling roads.
Hence, X is coal tar and Y is bitumen.

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