A) Process A is a chemical change
B) Process B is a chemical change
C) Both processes A and B are chemical changes
D) None of these processes is a chemical change.
Correct Answer: C
Solution :
Both digestion of animal waste by anaerobic bacteria and formation of biogas are chemical changes as new product is formed in both the changes.You need to login to perform this action.
You will be redirected in
3 sec