| 1 |
Potassium fertilizers are especially useful for |
- A. Tobacco
- B. Coffee
- C. Potato
- D. All of these
|
| 2 |
Which three elements are needed for the healthy growth of plants |
- A. N,S,P
- B. N,Ca,P
- C. N,P,K
- D. N,K,C
|
| 3 |
Which is not a calcarious material |
- A. Clay
- B. Limestone
- C. Marble
- D. Chalk
|
| 4 |
The nitrogen present to some fertilizers helps plants to |
- A. Fight against diseases
- B. Produce fat
- C. Undergo photosynthesis
- D. Produce protein
|
| 5 |
Ammonia is prepared industrially by |
- A. Contact process
- B. Ostwald process
- C. Birkland Eyed process
- D. Heber process
|
| 6 |
Which one of the following set of raw material is most suitable for manufacture of urea. |
- A. CH4, N2 and CO2
- B. H2, N2 and CO
- C. H2,CO2 and H2O
- D. H2O, N2 and H2
|
| 7 |
Which nitrogen fertilizer make the soil acdic. |
- A. Calcium nitrate
- B. sodium nitrate
- C. Potassium nitrate
- D. Ammonium nitrate
|
| 8 |
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
|
| 9 |
The percentage of nitrogen in urea is. |
- A. 36%
- B. 46%
- C. 56%
- D. 65%
|
| 10 |
the percentage of nitrogen in NH3 is |
- A. 46%
- B. 60%
- C. 82%
- D. 100%
|