Answer :

it increases air pollution and produces poisonous gas.

For question numbers 13 and 14, two statements are given – one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes (a) (b), (c) and (d) as given below:

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(a) State with reScience - Board Papers

Incomplete combusScience - Board Papers

Which one of the Science - Board Papers

(a) From the follScience - Board Papers