Some Important Compounds of Calcium

_____ is the most important building material of modern times.

When the suspension of calcium hydroxide is treated with chlorine, bleaching powder is formed.

When milk of lime is reacted with chlorine, calcium _____ and calcium chlroide is formed.

Calcium hydroxide is _____ soluble than potassium hydroxide.

Calcium hydroxide is more soluble in water than alkali metals hydroxides.

Dissolution of calcium hydroxides in water is an _____ process.

Calcium oxide can not be used for the purification of sugar.

_____ oxide is used for purification of sugar.

Identify $\mathrm{X}$ in the given reaction.

$\mathrm{CaO} + {\mathrm{CO}}_2 \to \underset{\mathrm{Calcium} \mathrm{carbonate}}{ {\mathrm{CaCO}}_3} \stackrel{2 \mathrm{X}}{\to } \underset{\mathrm{Sodium} \mathrm{carbonate}}{ {\mathrm{Na}}_2{\mathrm{CO}}_3} +{\mathrm{CaCl}}_2$

Sodium carbonate can be formed by the use of calcium oxide.

What are the uses of calcium carbonate?

Write the uses of cement.

Write the reaction of milk of lime with chlorine.

Explain the solubility of calcium hydroxide in water.

Why calcium oxide is used for the purification of sugar?

How can sodium carbonate be formed by the reaction of calcium oxide?

Write the physical state of calcium oxide.

State the physical state of calcium hydroxide at room temperature.

What is the melting point of calcium oxide?