The electrolyte employed in the extraction of sodium by Down's electrolysis method is:

(1) An aqueous solution of NaCl

(2) Molten NaCl

(3) Molten NaOH

(4) A molten mixture of ${\mathrm{MgCl}}_2$, and NaCl

Which statement is false for alkali metals?

(1) Lithium is the strongest reducing agent

(2) Sodium is amphoteric in nature

(3) Li⁺ is exceptionally small

(4) All alkali metals give blue solution in liquid ammonia

An aqueous solution of a salt of sodium (NaX) on boiling with ${\mathrm{MgCl}}_2$ gives white precipitate, hence anion X is:

1. ${\mathrm{HCO}}_3^{-}$

2. ${\mathrm{NO}}_3^{-}$

3. ${\mathrm{CO}}_3^{2-}$

4. ${\mathrm{SO}}_3^{2-}$

The process associated with sodium carbonate manufacture is known as........... process.

(1) Chamber

(2) Haber

(3) Leblanc

(4) Castner

When sulfur is heated with NaOH(aq) the compounds formed are:

1. ${\mathrm{Na}}_2\mathrm{S}+{\mathrm{H}}_2\mathrm{O}$

2. ${\mathrm{Na}}_2{\mathrm{SO}}_3+{\mathrm{H}}_2\mathrm{O}$

3. ${\mathrm{Na}}_2\mathrm{S}+{\mathrm{Na}}_2{\mathrm{S}}_2{\mathrm{O}}_3+{\mathrm{H}}_2\mathrm{O}$

4. ${\mathrm{Na}}_2{\mathrm{S}}_2{\mathrm{O}}_3+{\mathrm{H}}_2\mathrm{O}$

The raw materials in the Solvay process are

1. $\mathrm{NaOH},\mathrm{CaO}\text{ and }{\mathrm{NH}}_3$

2. ${\mathrm{Na}}_2{\mathrm{CO}}_3,{\mathrm{CaCO}}_3\text{ and }{\mathrm{NH}}_3$

3. ${\mathrm{Na}}_2{\mathrm{SO}}_4,{\mathrm{CaCO}}_3\text{ and }{\mathrm{NH}}_3$

4. $\mathrm{NaCl},{\mathrm{NH}}_3,{\mathrm{CaCO}}_3$

Which one of the following is formed on dissolving ${\mathrm{I}}_2$ in the aqueous solution of KI?

1. ${\mathrm{KIO}}_4$

2. KIO

3. ${\mathrm{KI}}_3$

4. ${\mathrm{KIO}}_3$

Lithium is the strongest reducing agent among alkali metals due to which of the following factor

(1) ionization energy

(2) Electron affinity

(3) Hydration energy

(4) Lattice energy

Among the following, which has minimum solubility in water?

(1) KOH

(2) CsOH

(3) LiOH

(4) RhOH

When KCI is heated with conc. ${\mathrm{H}}_2{\mathrm{SO}}_4$ and solid ${\mathrm{K}}_2{\mathrm{Cr}}_2{\mathrm{O}}_7$ we get:

(1) chromyl chloride

(2) chromous chloride

(3) chromic chloride

(4) chromic oxide