Question

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.

विकल्प

• Process – A is a chemical change.

• Process – B is a chemical change.

• Both processes A and B are chemical changes.

• None of these processes is a chemical change.

Answer 1

Both processes A and B are chemical changes.