Question

which of the following are chemical change?
(a)Digestion of food
(b)liquifaction of air
(c) ripening of fruit
(d) dissolution of sulpher in carbon disulphate
(e) freezing of water
(f) electrolysis of water.

Answer 1

Hey here is your answer..

Digestion of food(a), ripening of fruit(c), dissolution of sulphur in carbon disulphide (d) , electrolysis of water(f)

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Answer 2

The correct option regarding the chemical change is (a)Digestion of food (c) ripening of fruit and (f) electrolysis of water.

• When a substance change into another substance and there is no chance of going back into its previous stage then the process is called chemical change while in a physical change, no new substance is formed.
• Physical changes are those in which the product formed has the same properties as initially.
• Changes can be inorganic, organic, and biochemical but all these changes are chemical changes.
• biochemical processes such as. digestion of food involves enzymes and the end products formed are completely enzymes and have new properties so, it is a chemical change.
• For example - burning of gas, ripening of fruit, electrolysis of water, etc.
• The dissolution of sulfur in carbon disulphate is not a chemical change because no new substance is formed.

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