Question

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


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

Answer:

Process-B is a chemical change.

Explanation:

Anearobic bacteria will digest the animal waste - and while digesting it will produce methane and sulphur, Thus, Process-A is NOT a chemical change while Process-B is - When Boigas is burnt - It will Change into Carbon Dioxide,  Sulphur, Soot, Carbon monoxide and more