Metals generally react with dilute acids to produce hydrogen gas.

Question:

Metals generally react with dilute acids to produce hydrogen gas. Which one of the following metals does not react with dilute hydrochloric acid?

(a) Magnesium

(b) Aluminium

(c) Iron

(d) Copper

Solution:

(d) The less reactive metals like copper, silver and gold do not react with dilute hydrochloric acid to produce hydrogen gas.

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