| 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 raw materials for the manufacturing of urea are. |
- A. Ammonia
- B. Carbondioxide
- C. Limestone
- D. a & b
|
| 3 |
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
|
| 4 |
How many % age of nitrogen in urea fertilizers? |
- A. 40.6
- B. 45.6
- C. 46.6
- D. 50
|
| 5 |
On which bases froth floatation process take place? |
- A. Density bases
- B. Concentration basis
- C. Watting basis
- D. None of these
|
| 6 |
Concentration of copper are is carried out by process. |
- A. Roasting
- B. Forth floatation
- C. Gravity sepration
- D. Electrostatic separation
|
| 7 |
Formula of soda ash 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>3</sub>PO<sub>4</sub>
|
| 8 |
Manufacturing of urea involves: |
- A. 2 steps
- B. 3 steps
- C. 4 steps
- D. 5 steps
|
| 9 |
The number of carbon atoms present in diesel oil. |
- A. 10-15
- B. 11-15
- C. 12-15
- D. 13-15
|
| 10 |
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>
|
