Question

Which Substance is used for metalling
the roads these days in place of coal tar​

Answer 1

Answer:

bitumen

Note: These days bitumen a petroleum product is used in place of coal tar for metalling the roads. (3) Coal Gas: Coal gas is mainly a mixture of hydrogen, methane and carbon monoxide.

Answer 2

Answer:

Introduction:

Answer: (a) Bitumen is used for metalling the roads in place of coal-tar. (b) Paraffin wax is used in ointments and in candles. (c) Liquefied petroleum gas (L.P.G) is used as domestic fuel.Jun 4, 2014