TEST - 44 ( Principles of Metallurgy )

EFFORTS NEVER FAIL

NAME : *

1. The impurities present in the ore is called *

1 point

Slag

Forth

Flux

Gangue

2. The method suitable for purification of low boiling metals is *

1 point

Poling

Distillation

Liquation

Electrolytic Refining

3. Which of the following element occurs in free state? *

1 point

Phosphorus

sulphur

Silicon

Gold

4. During calcinations, carbonate is converted to its *

1 point

Oxide

Sulphite

A and B

None of these

5. Chemical formula of a Cinnabar is *

1 point

HgS

AgCl

PbS

NaCl

6. Chemical formula of a Horn silver is *

1 point

HgS

AgCl

PbS

NaCl

7. Chemical formula of a Gelena is *

1 point

HgS

AgCl

PbS

NaCl

8. Chemical formula of a Rocksalt is *

1 point

HgS

AgCl

PbS

NaCl

9. How many water molecules are present in Epsom salt? *

1 point

10. is a process of heating the ore strongly in the presence of oxygen. *

1 point

Smelting

Roasting

Calcination

Distillation

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