Question

5. Four metals AI, Zn, Na and Cu 1 are added in different test tubes containing dilute hydrochloric acid. Explosive reaction is observed in the case of
Oa. Al
O b. Na
O c. c. Zn
O d. Cu​

Answer 1

Answer:

na

Explanation:

Sodium is a very reactive metal.

Answer 2

The correct option is b.

• Na is a highly reactive metal. In presence of air, it blasts. So, when sodium is added to dilute hydrochloric acid an explosive reaction takes place and NaCl along with hydrogen gas is formed.
• The reaction is-
• $2Na+2HCl\rightarrow 2NaCl+H_2$
• Al on reaction with HCl forms aluminium chloride.
• Zn on reaction with HCl forms zinc chloride.
• Cu on reaction with HCl forms copper chloride.