Calcium Carbonate

Q.

Carbon dioxide and water combine to form _____________ ( Carbonic acid / Carbon monoxide).

Q.

Name the reaction in which an acid and a base mix together and give out salt and water.

1. Combustion

2. Neutralization

3. Filtration

4. Corrosion

Q. _____ acid is used in the laboratory preparation of calcium carbonate.

1. Carbonic
2. Nitric
3. Sulphuric
4. Hydrochloric

Q. What is calcium carbonate is used for.

Q. The lime water turns milky when X gas is passed through it. This milkiness is caused due to the formation of Y. Identify X and Y from the options given below.

1. X- $\text{CO}$, Y- ${\text{CaCO}}_3$
2. X- ${\text{CO}}_2$, Y- ${\text{Ca(OH)}}_2$
3. X- ${\text{CO}}_2$, Y- ${\text{CaCO}}_3$
4. X- ${\text{O}}_2$, Y- ${\text{Na}}_2{\text{CO}}_3$

Q. Egg shells and conch are natural sources of calcium carbonate.

1. True
2. False

Q. A is a gas which on dissolving in water forms an acid B. This acid on reaction with calcium hydroxide gives C and water. Identify A, B and C.

1. A- Carbon dioxide, B- Carbonic acid, C- Calcium carbonate
2. A- Carbon monoxide, B- Carbonic acid, C- Calcium oxide
3. A- Oxygen, B- Sodium sulphate, C- Sodium carbonate
4. A- Carbon dioxide, B- Carbonic acid, C- Calcium chloride

Q.

what is economic importance of calcium carbonate

Why is calcium carbonate used in agriculture

Q.

What happens when Carbon dioxide is passed through lime water for a short time?

Q.

Which of the following represents the chemical formula of Calcium Carbonate?

1. Endothermic

2. Combination

3. Synthesis

4. Exothermic