. Anaerobic bacteria digest animal waste and produce biogas (Change - A).


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.

(i)  Process - A is a chemical change.

(ii) Process -B is a chemical change.

(iii)Both processes A and B are chemical changes .

(iv) None of these processes is a chemical change.

 

Best Answer

Both processes A and B are chemical changes.

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