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

In context with beryllium, which one of the following statements is incorrect?

1. It is rendered passive by nitric acid
2. It forms ${\mathrm{Be}}_2\mathrm{C}$
3. Its salts rarely hydrolyze
4. Its hydride is electron-deficient and polymeric

The most acidic oxide among the following is - 
1. MgO
2. BeO
3. BaO
4. CaO

The product obtained as a result of a reaction of nitrogen with CaC₂ is:

1. CaCN
2. CaCN₃
3. Ca₂CN
4. CaCN₂

Which of the following statements is false?
 

A compound that releases CO₂ most easily upon heating is?
1. $K_{2}C{O}_3$
2. $N{a}_{2}C{O}_3$
3. $MgC{O}_3$
4. $CaC{O}_3$

Which of the following biologically important ions is also a constituent of the sodium pump?

1. Ca²⁺
2. Mg²⁺
3. K⁺
4. Fe²⁺

Solubility of alkaline earth metal sulphates in water decreases in the sequence:

1. Mg > Ca > Sr >Ba
2. Ca > Sr > Ba > Mg
3. Sr > Ca > Mg > Ba
4. Ba > Mg > Sr > Ca

Which one of the following alkali metals forms only the normal oxide M₂O on heating in air?

1. Rb

2. K

3. Li

4. Na

 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.  ${\mathrm{CaOCl}}_2$