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Q.

Which does not react with dilute hydrochloric acid?

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a

Copper

b

Zinc

c

Iron

d

None of these

answer is A.

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Detailed Solution

  • Because they follow hydrogen in the activity series, copper and mercury metals do not react with diluted hydrochloric acid.
  • Hydrochloric acid cannot be replaced by hydrogen by copper or mercury metals.
  • Due to its position below hydrogen in the electrochemical series, copper does not react with hydrochloric acid but does with sulfuric acid instead.
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