Question

roasting is a process in which a carbonate ore is heated below its melting point in the absence of air. true false ​

Answer 1

Answer:

Calcination is the process in which concentrated ore is heated to a high temp (just below its fusion temp) in the absence of air.

Hydrated ores convert into oxides-

Al

2

O

3

.2H

2

O

Δ

Al

2

O

3

+2H

2

O

Fe

2

O

3

.3H

2

O

Δ

Fe

2

O

3

+3H

2

O

Roasting is the process in which air is passed while heating the concentrated ore below its melting point.

Smelting is a metallurgical process in which less electropositive metal ore such as PbO, Cr

2

O

3

are reduced to free metal using the powerful reducing agent like Al, C, CO etc.

Explanation:

Metals like Cu and Tin are separated from their respective oxides by Poling process using green bamboo stick.

hope it helps you ...

plzz mark as brainlist and foolow me