| 1 |
Pulp is washed to remove lignin from it. Due to the presence of lignin in pulp paper becomes. |
- A. Soft
- B. Brittle
- C. Acidic
- D. Colourless
|
| 2 |
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
|
| 3 |
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
|
| 4 |
Prilling is a process in which |
- A. Concentration of urea is increased
- B. Water is removed from urea
- C. Molten urea is converted to solid drop
- D. Some other ingredients are added to urea
|
| 5 |
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
|
| 6 |
The macronutrients are required in quantities ranging from |
- A. 4-40 kg per acre
- B. 10-100 kg per acre
- C. 5-100 kg per acre
- D. 5-200 kg per acre
|
| 7 |
Ammonia is prepared industrially by |
- A. Contact process
- B. Ostwald process
- C. Birkland Eyed process
- D. Heber process
|
| 8 |
Micronutrients are required in quantity ranging from |
- A. 4g-40g
- B. 6g-200g
- C. 6kg-200kg
- D. 4kg-40kg
|
| 9 |
Ammonium nitrate fertilizers is not used for which crop |
- A. Cotton
- B. Wheat
- C. Sugar cane
- D. Paddy rice
|
| 10 |
In which country first of all paper was invented |
- A. USA
- B. China
- C. Egypt
- D. Germany
|