| 1 |
During pulp making, the pH of digester is maintained at. |
- A. 1-2
- B. 3-5
- C. 6-8
- D. 7-9
|
| 2 |
In Pakistan, the total consumption of paper per person per year is. |
- A. 2 kg
- B. 5 kg
- C. 7 kg
- D. 10 kg
|
| 3 |
The word paper is derived from the name of which reedy plant |
- A. Rose
- B. Sun flower
- C. Papyrus
- D. Water
|
| 4 |
the percentage of nitrogen in NH3 is |
- A. 46%
- B. 60%
- C. 82%
- D. 100%
|
| 5 |
During manufacturing of cement , the temperature of pre heating zone is. |
- A. 500 <sup>o</sup>C
- B. 900<sup>o</sup>C
- C. 1000<sup>o</sup>C
- D. 1500<sup>o</sup>C
|
| 6 |
Conversion of ammonium carbamate into urea is |
- A. Hydrolysis
- B. Hydrogenation
- C. Hydration
- D. Dehydration
|
| 7 |
The diameter of rotary kiln in the manufacture of Portland cement is. |
- A. 1 to 2 feet
- B. 2 to 4 feet
- C. 4 to 8 feet
- D. 8 to 15 feet
|
| 8 |
The macro nutrients are required in ranging from |
- A. 5 kg to 200 kg
- B. 5 kg to 200 g
- C. 6g to 200 g
- D. 1 kg to 100 kg
|
| 9 |
Usually the percentage of moisture is paper is |
- A. 1- 3%
- B. 4-6%
- C. 6-8%
- D. 5%
|
| 10 |
The percentage of clay and liem stone in cement is in the ratio of. |
- A. 1 : 1
- B. 1 :2
- C. 1:3
- D. 3:1
|