Compounds Of Ca And Na Preparations Properties Uses

An oxide that does not react with sodium hydroxide is:
1. B₂O₃
2. CaO
3. SiO₂
4. BeO

An active ingredient in bleaching powder that aids in the bleaching action is:

1. $\mathrm{Ca}{\left(\mathrm{OCl}\right)}_2$

2. ${\mathrm{CaO}}_2\mathrm{Cl}$

3. ${\mathrm{CaCl}}_2$

4. ${\mathrm{CaOCl}}_2$

The suspension of slaked lime in water is known as:
1. lime water
2. quick lime
3. milk of lime
4. washing of lime

Among the following alkaline earth metal halides, the one which is covalent and soluble in organic solvents is:

1. Magnesium chloride

2. Beryllium chloride

3. Calcium chloride

4. Strontium chloride