i. Carbon dioxide is passed through water. The reaction is a………reaction. ii. Calcium carbonate is heated.

Question

Fill in the blank:

i. Carbon dioxide is passed through water. The reaction is a………reaction.

ii. Calcium carbonate is heated. The reaction is a………..reaction.

iii. Zinc strip is dipped in a CuSO₄ solution. The reaction is a……….reaction.

iv. Silver nitrate solution is added to NaCl solution. The reaction is a……….reaction.

v. The slow process of decay or destruction of a metal due to effect of air, moisture and acids on it is known as……….

Answer 1

i. Carbon dioxide is passed through water. The reaction is a combination reaction.

ii. Calcium carbonate is heated. The reaction is a decomposition reaction.

iii. Zinc strip is dipped in a CuSO₄ solution. The reaction is a displacement reaction.

iv. Silver nitrate solution is added to NaCl solution. The reaction is a double displacement reaction.

v. The slow process of decay or destruction of a metal due to effect of air, moisture and acids on it is known as corrosion.