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Question

Which petroleum product is used in place of coal tar for metalling the roads?


A

Lignite

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B

Bitumen

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C

Coal gas

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D

Peat

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Solution

The correct option is B

Bitumen


Bitumen, a petroleum product, is used in place of coal-tar for metalling the roads. It is a very good adhesive. It sticks well to the sub layers. Bitumen is a black, oily, viscous material that is a naturally occurring organic byproduct of decomposed organic materials. The primary use (70%) of asphalt/bitumen is in road construction, where it is used as glue or binder mixed with aggregate particles to create asphalt concrete.


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