On heating sodium metal in a current of dry ammonia gas the compound formed is:

(1) sodium nitrate

(2) sodium hydride

(3) sodium amide

(4) sodium azide

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. ${\mathrm{SO}}_3^{2-}$

A highly pure dilute solution of sodium in liquid ammonia:

(1) Shows blue color

(2) Do not exhibit electrical conductivity

(3) Produces sodium amide

(4) Produces hydrogen gas

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

The product obtained on the fusion of BaSO₄  and Na₂CO₃  is
 

1. BaO

2. BaCO₃

3. BaHSO₄

4. Ba(OH)₂

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An aqueous solution of sodium carbonate is alkaline because sodium carbonate

is a salt of 

(1) weak acid and weak base 

(2) weak acid and strong base 

(3) strong acid and strong base 

(4)  strong acid and weak base