| 1 |
Red hair contains compound of. |
- A. Iron
- B. copper
- C. titanium
- D. Molybdenum
|
| 2 |
Process of heating the concentrated ore to high temperature in excess of air is called. |
- A. Roasting
- B. Smelting
- C. Bessemerization
- D. All
|
| 3 |
Ammonia is prepared by: |
- A. Solvay's process
- B. Haber's process
- C. Floatation process
- D. Bayer's process
|
| 4 |
The impurities associated with the minerals are known as: |
- A. Metallurgy
- B. Ores
- C. Gangue
- D. Compounds
|
| 5 |
The number of carbon atoms present in diesel oil. |
- A. 10-15
- B. 11-15
- C. 12-15
- D. 13-15
|
| 6 |
Brown hair contains. |
- A. Iron compound
- B. Copper compound
- C. titanium compound
- D. Both a and b
|
| 7 |
Blonde hair contains compounds of: |
- A. molybdenum
- B. iron
- C. titanium
- D. copper
|
| 8 |
Froth flotation process is used to concentrate the ore on: |
- A. Density basis
- B. Concentration basis
- C. Wetting basis
- D. Magnetic basis
|
| 9 |
Ammonical brine is prepared by dissolving ammonia gas in. |
- A. NaCl
- B. CaCO<sub>3</sub>
- C. CaCl<sub>2</sub>
- D. Na<sub>2</sub>SO<sub>4</sub>
|
| 10 |
Chemical formula of matte will: |
- A. Cu2S.FeS
- B. Cu2S
- C. Cu2O
- D. FeS
|