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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.



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.


Grade:upto college level

1 Answers

Kevin Nash
askIITians Faculty 332 Points
9 years ago

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

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