| 1 |
The number of carbon atoms present in petroleum gas. |
- A. 1-2
- B. 1-3
- C. 1-4
- D. 1-5
|
| 2 |
On which bases froth floatation process take place? |
- A. Density bases
- B. Concentration basis
- C. Watting basis
- D. None of these
|
| 3 |
Concentration of the copper ore is carried out by: |
- A. Calcinations
- B. Roasting
- C. Forth flotation
- D. Distillation
|
| 4 |
The residual oil is heated above 400 c to produce. |
- A. Lubricants
- B. Paraffin wax
- C. Asphalt
- D. All
|
| 5 |
When NaHCO<sub>3 </sub>is heated if forms: |
- A. CO<sub>2</sub>
- B. Ca(OH)<sub>2</sub>
- C. CaCO<sub>3</sub>
- D. CaO
|
| 6 |
Concentration is a separating technique in which mineral is separated from. |
- A. Gangue
- B. Silicates
- C. Aluminates
- D. All
|
| 7 |
Blast furnace usually used for the metallurgy of. |
- A. Iron
- B. Copper
- C. Aluminum
- D. Both a and b
|
| 8 |
Which contains sufficient amount of metal? |
- A. Mineral
- B. Ores
- C. Rocks
- D. Soil
|
| 9 |
At the time of partition, How many industries wee present in Pakistan. |
|
| 10 |
The impurities associated with the minerals are known as: |
- A. Metallurgy
- B. Ores
- C. Gangue
- D. Compounds
|
