Foundation
Chemistry Foundation
Coal Petroleum and Polymers
Question
The petroleum product that has replaced coal-tar for metalling the road is :
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Solution
Bitumen is the petroleum product used for road metalling today. It is a viscous, black material obtained from crude oil refining. Unlike coal-tar (a by-product of coal processing), bitumen is preferred for its superior binding properties, water resistance, and durability in asphalt concrete. It effectively binds aggregate particles to form a smooth, strong road surface.
Final Answer: bitumen