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  • Anaerobic bacteria digest animal waste and produce biogas (Change- A).The biogas is then burnt as fuel (Change_B).

12. Anaerobic bacteria digest animal waste and produce biogas (Change – A). The biogas is then burnt as fuel (Change – B). The following statements pertain to these changes. Choose the correct one.

(i) Process – A is a chemical change.

(ii) Process – B is a chemical change.

(iii) Both processes A and B are chemical changes.

(iv) None of these processes is a chemical change.

Answers (1)

best_answer

Anaerobic bacteria digest animal waste and produce biogas (Change – A). The biogas is then burnt as fuel (Change – B).

Both process A and B are a chemical change.

Thus, option  (iii) is correct.

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seema garhwal

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