Question

Boojho has often noticed that the road construction workers hent a black material (tar) for
repairing a rond. Identify the change caused in the tar by heating

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Answer 1

Answer:

reversible change

Explanation:

when tar is heated it turns into a hot thick black liquid which will turn into solid after getting cooled..thays why it is a reversible process

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Answer 2

Answer:

on heating the (tar)Will melt an mix with the stones and make the road tough

Explanation:

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