Which of these sets represents the processes that always result in a chemical change?Choose your answer:Deselect allA.Burning, cooking, freezing, boilingB.Rotting, burning, cooking, rustingC.Dissolving, digestion, rusting, freezingD.Absorption of heat and light, rotting, burning

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2015-10-23T11:44:15+05:30

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Here, the correct option will be (B).
This set of processes - 
i. Rotting ; ii. Burning ; iii. Cooking and iv. Rusting
always result in chemical changes.
None of the changes obtained after the following processes is reversible. 

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2015-10-23T11:49:33+05:30

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The answer is option b
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