Question

State whether the following changes can be reversed or not-- [3]

(i) Changing of cow dung to biogas.

(ii) Grain to its flour.

(iii) Stretched rubber band to its normal size.

(iv) Melting of ice candy.​

Answer 1

Answer:

1. reversed

2. not

3.reversed

4.reversed

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Answer 2

Answer:

1. Reversed

2. Reversed

3. Reversed

4. Not