| 1 |
The residual oil is heated above 400 c to produce. |
- A. Lubricants
- B. Paraffin wax
- C. Asphalt
- D. All
|
| 2 |
A saturated solution of sodium chloride is called. |
- A. Brine
- B. Suspension
- C. Colloidal
- D. None of these
|
| 3 |
Which one of the following is used as jet fuel. |
- A. Kerosene oil
- B. Lubricating oil
- C. Fuel oil
- D. Diesel oil
|
| 4 |
In the bessemerization process. |
- A. Roasted ore is beated.
- B. Molten matte is removed.
- C. Molten matte is heated
- D. Molten matte is added
|
| 5 |
Urea is nitrogenous fertilizer. It consist of nitrogen. |
- A. 26.6 %
- B. 36.6%
- C. 46.6%
- D. 56.6%
|
| 6 |
Formula of Urea is. |
- A. KCNO
- B. H<sub>2</sub>N-CO-NH<sub>2</sub>
- C. HN-CO<sub>2</sub>-NH
- D. H<sub>3</sub>N-CO-NH<sub>3</sub>
|
| 7 |
Matte is a mixture of: |
- A. FeS and CuS
- B. Cu<sub>2</sub>O and FeO
- C. Cu<sub>2</sub>S and FeS
- D. CuS and FeO
|
| 8 |
Composition of carbon in kerosene oil is. |
- A. C<sub>10</sub>-C<sub>12</sub>
- B. C<sub>12</sub>-C<sub>12</sub>
- C. C<sub>16</sub>-C<sub>18</sub>
- D. C<sub>30</sub>-C<sub>30</sub>
|
| 9 |
Froth flotation process is used to concentrate. |
- A. Copper ore
- B. Iron ore
- C. Chromium ore
- D. Aluminum ore
|
| 10 |
How many units are in Pakistan for manufacturing of Urea. |
|