General Principle of Extraction of Metal Test

Result

General Principle of Extraction of Metal Test - 2

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

Refractory materials are generally used in furnaces because

A
They possess great structural strength

B
They can withstand high temperature

C
They are chemically inert

D
They do not require replacement

Solution

These are the substances which can withstand very high temperature without melting or becoming soft.
Question 2
1 / -0

When lime stone is heated strongly, it gives off CO₂. In metallurgy this process is known as

A
Calcination

B
Roasting

C
Smelting

D
Ore dressing

Solution

CaCo₃ → CaO + CO₂
Question 3
1 / -0

The substance which is mixed with the ore for removal of impurities is termed as

A
Slag

B
Gangue

C
Flux

D
Catalyst

Solution

Flux is added during smelting it combines with infusible gangue present in the ore to form a fusible mass known as slag.

Flux + Gangue → Slag
Question 4
1 / -0

Which of the following substance can be used for drying gases

A
CaCO₃

B
Na₂CO₃

C
NaHCO₃

D
CaO

Solution

CaO → It is hygroscopic in nature