HCl was passed through a solution of CaCl₂, MgCl₂, and NaCl. Compound(s) that get crystallize is/are-

1. Only NaCl

2. Only MgCl₂

3. NaCl, MgCl₂, and CaCl₂

4. Both MgCl₂ and CaCl₂

Identify the correct statement from the following.

1. The correct order of hydration enthalpies of alkaline earth cations is
Be²⁺ < Mg²⁺ < Ca²⁺ < Sr²⁺ < Ba²⁺

2. Lithium and Magnesium show some similarities in their physical properties as they are diagonally placed in the periodic table.

3. Lithium is softer among all alkali metals.

4. Lithium chloride is deliquescent and crystallizes as a hydrate, LiCl·6H₂O.

Which of the alkali metal chloride (MCl) forms its dehydrate salt (MCl.$2H_{2}O$) easily?

1. LiCl

2. CsCl

3. RbCl

4. KCl

Crude sodium chloride obtained by crystallization of brine solution does not contain-

1. $MgS{O}_4$

2. $N{a}_{2}S{O}_4$

3. $MgC{l}_2$

4. $CaS{O}_4$

Among the following which one has the highest cation to anion size ratio?

1. CsF

2. LiF

3. NaF

4. CsI

The compound A on heating gives a colourless gas and a residue that is dissolved in water to obtain B. Excess of CO₂ is bubbled through an aqueous solution of B. C is a solid. Solid C on gentle heating gives back A. The compound A is -

1. Na₂CO₃

2. K₂CO₃

3. CaSO₄.2H₂O

4. CaCO₃

Match List I with List II for the composition of substances and select the correct answer using the code given below:

Code :

When a substance A reacts with water it produces a combustible gas B and a solution of substance C in water. When another substance D reacts with this solution of C, it also produces the same gas B on warming but D can produce gas B on reaction with dilute sulphuric acid at room temperature. A imparts a deep golden yellow colour to a smokeless flame of Bunsen burner. 

The substance A, B, C and D, respectively are:
1.  K, $H_2$, NaOH, Zn
2.  Na, NaOH, $H_2$ , Zn
3.  Li, $H_2$, LiOH, Zn
4.  None of the above

A solid compound 'X' on heating gives CO₂ gas and a residue. The residue mixed with water forms 'Y'. On passing an excess of CO₂ through 'Y' in water, a clear solution, 'Z' is obtained. On boiling 'Z', compound 'X' is reformed. The compound 'X' is :-

1. ${\mathrm{CaCO}}_3$

2. ${\mathrm{Na}}_2{\mathrm{CO}}_3$

3. ${\mathrm{K}}_2{\mathrm{CO}}_3$

4. $\mathrm{Ca}{\left({\mathrm{HCO}}_3\right)}_2$

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