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Question

Identify the chemical changes in the list:
(i) Ripening of fruits
(ii) Fermentation of grapes
(iii) Magnetization of iron

  1. Only (i) and (ii)
  2. Only (ii) and (iii)
  3. Only (i) and (iii)
  4. (i), (ii) and (iii)

A
Only (ii) and (iii)
B
(i), (ii) and (iii)
C
Only (i) and (ii)
D
Only (i) and (iii)
Solution
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Ripening of fruits and fermentation of grapes are chemical changes. These are irreversible and new substances are produced as a result of these. Magnetization of iron is a physical change as no new substances are being formed and it is reversible.

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