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Physical and Chemical Changes
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09/07/2021 1:16 pm
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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.
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09/07/2021 1:16 pm
(iii) Both processes A and B are chemical change