Question

will react with dilute hydrochloric acid to form salt and hydrogen gas.

• A. Silver
• B. Aluminium
• C. Gold

Answer 1

The correct option is B Aluminium

Metals on reaction with acids produce respective salts and hydrogen gas. Aluminium reacts with dilute hydrochloric acid to form aluminium chloride and hydrogen. The reaction involved is:

$2\mathrm{Al}\left(s\right)+6\mathrm{HCl}\left(\mathrm{aq}\right)\to 2{\mathrm{AlCl}}_3\left(\mathrm{aq}\right)+3H_2\left(g\right)$

Since, gold and silver are least reactive they do not react with acids.