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

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, ${\mathrm{Na}}_2{\mathrm{CO}}_3$

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.

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