| 1 |
Which one of the following is used as jet fuel. |
- A. Kerosene oil
- B. Lubricating oil
- C. Fuel oil
- D. Diesel oil
|
| 2 |
The process of removal of gangue form the ore is technically known as: |
- A. concentration
- B. purification process
- C. metallurgy
- D. refining
|
| 3 |
On which bases froth floatation process take place? |
- A. Density bases
- B. Concentration basis
- C. Watting basis
- D. None of these
|
| 4 |
How many percentage blister copper is pure? |
- A. 95%
- B. 75%
- C. 98%
- D. 100%
|
| 5 |
Formula of baking soda is. |
- A. Na<sub>2</sub>CO<sub>3</sub>
- B. NaHCO<sub>3</sub>
- C. Na<sub>2</sub>SO<sub>4</sub>
- D. Na<sub>2</sub>PO<sub>4</sub>
|
| 6 |
Extraction of metals from its ores is called. |
- A. Metallurgy
- B. Mining
- C. Griding
- D. All
|
| 7 |
At the time of partition, How many industries wee present in Pakistan. |
|
| 8 |
Concentration is process of: |
- A. Mixting technique
- B. Separating technique
- C. Boiling technique
- D. Cooling techique
|
| 9 |
Froth flotation process is used to concentrate the ore on: |
- A. Density basis
- B. Concentration basis
- C. Wetting basis
- D. Magnetic basis
|
| 10 |
The raw materials for the manufacturing of urea are. |
- A. Ammonia
- B. Carbondioxide
- C. Limestone
- D. a & b
|
