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Question 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.

Question 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:12th pass

1 Answers

Pawan Prajapati
askIITians Faculty 60787 Points
2 years ago
Answer:(iii) Both processes A and B are chemical changes.

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