Question

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

A. Process-A is a chemical change
B. process-B is achemical change
C. Both processes A and B are chemical changes
D. None of these processes is a chemical change
JUST ONE WORD ANSWER PLS​

Answer 1

Answer:

option c both process a and b are chemical changes