| 1 |
The nitrogen present in some fertilizers helps plants |
- A. to fight against diseases
- B. to produce fat
- C. to undergo photosynthesis
- D. to produce protien
|
| 2 |
Which one is not an argillaceous material. |
- A. Clay
- B. Shale
- C. State
- D. Gypsum
|
| 3 |
Which one of the following raw materials is not present in the cement. |
- A. Lime stone
- B. Gypsum
- C. Blast furnace slag
- D. Red lead
|
| 4 |
Ammonium nitrate fertilizers is not used for which crop |
- A. Cotton
- B. Wheat
- C. Sugar cane
- D. Paddy rice
|
| 5 |
Micro-nutrient is required in quantity for plant growth ranging from |
- A. 4-40 gm
- B. 6-200 gm
- C. 6-200 kg
- D. 4-40 kg
|
| 6 |
Which substance is used ot bleach the pulp. |
- A. Na2SO3
- B. NaCl
- C. NaClO
- D. NaOH
|
| 7 |
The percentage of nitrogen in urea is. |
- A. 36%
- B. 46%
- C. 56%
- D. 65%
|
| 8 |
The word paper is derived from the name of which reedy plant |
- A. Rose
- B. Sun flower
- C. Papyrus
- D. Water Hyacinth
|
| 9 |
During pulp making, the pH of digester is maintained at. |
- A. 1-2
- B. 3-5
- C. 6-8
- D. 7-9
|
| 10 |
Which is not a calcarious material |
- A. Clay
- B. Limestone
- C. Marble
- D. Chalk
|
