Question

Q3. 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.

1. Process – A is a chemical change.
2. Process – B is a chemical change.
3. Both processes A and B are chemical changes.
4. None of these processes is a chemical change.
Give reasons to justify your answer.

Answer 1

Answer:

I don't know the answer

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