When a solution of sodium hydroxide is added in excess to the solution of potash alum, a specific outcome or reaction occurs.

(1) A clear solution 

(2) A crystalline mass

(3) A white precipitate 

(4) Bluish white precipitate 

Sodium in liquid ammonia is used as :

1. Oxidizing agent .

2. Reducing agent.

3. Hydrolyzing agent.

4. Precipitating agent.

What are the by-products of the Solvay process

(1) ${\mathrm{CaCl}}_2$, ${\mathrm{CO}}_2$, ${\mathrm{NH}}_3$ 

(2) ${\mathrm{Na}}_2{\mathrm{CO}}_3$, ${\mathrm{CO}}_2$

(3) ${\mathrm{NH}}_4\mathrm{Cl}$, CaO  

(4) CaO, ${\mathrm{Na}}_2{\mathrm{CO}}_3$

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

The product obtained on the fusion of BaSO₄  and Na₂CO₃  is
 

1. BaO

2. BaCO₃

3. BaHSO₄

4. Ba(OH)₂

​​​​​​​

The correct order of  thermal stability of carbonates of Group 2 elements is-

1. ${\mathrm{BeCO}}_3<{\mathrm{MgCO}}_3<{\mathrm{CaCO}}_3<Sr{\mathrm{CO}}_3<{\mathrm{BaCO}}_3$

2. ${\mathrm{BeCO}}_3<{\mathrm{MgCO}}_3<{\mathrm{BaCO}}_3<{\mathrm{SrCO}}_3<{\mathrm{CaCO}}_3$

3. ${\mathrm{BaCO}}_3<{\mathrm{MgCO}}_3<{\mathrm{CaCO}}_3<Sr{\mathrm{CO}}_3<{\mathrm{BeCO}}_3$

4. ${\mathrm{BaCO}}_3<{\mathrm{CaCO}}_3<{\mathrm{MgCO}}_3<{\mathrm{SrCO}}_3<{\mathrm{BeCO}}_3$

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

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

(1) Chamber

(2) Haber

(3) Leblanc

(4) Castner

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