Question

Road construction workers heat black materials (tar) for repairing a road. Do you think this change caused is Tar can be reversed by heating? Explain

Answer 1

Answer:

thanks jarur dena

Explanation:

Ans: Coal tar is a black, solid material which is used in making and repairing roads. Whencoal tar is heated, it melts to form a thick black liquid. The melting of coal tar on heating, is a reversible change because when hot, molten coal tar gets cooled, it solidifies again.

Answer 2

Answer:

Yes , This change can be reversed .