Online Practice Fertiliser Technology pdf - Set 03 - ObjectiveBooks

Online Practice Fertiliser Technology pdf - Set 03

Practice Test: Question Set - 03


1. Which of the following is not a measure component necessarily to be present in fertilizers?
    (A) Nitrogen
    (B) Potassium
    (C) Phosphorous
    (D) Sulphur

2. Conditioners like finely divided peat are added to the fertilizer to
    (A) Counteract burning
    (B) Avoid caking & hardening
    (C) Produce bulk
    (D) Increase its solubility

3. Yield of urea can be increased with excess ammonia and higher pressure & temperature, but because of __________ this is normally not done.
    (A) Increased biuret formation
    (B) High corrosion rate
    (C) Increased cost of equipment
    (D) All (a), (b) & (c)

4. Urea is a better fertilizer than ammonium sulphate, because
    (A) It is cheaper
    (B) Nitrogen content is higher
    (C) It is not poisonous
    (D) It is easy to manufacture

5. The concentration (weight %) of nitric acid produced by the oxidation of ammonia and absorption of nitrogen oxides with water is about __________ percent.
    (A) 60
    (B) 30
    (C) 95
    (D) 100

6. Electric furnace method for production of phosphorous uses phosphate rock and __________
    (A) Phosphoric acid
    (B) Coke
    (C) Sulphuric acid
    (D) Silica and coke

7. Heating of coke, sand & phosphate rock in an electric furnace is done for the manufacture of
    (A) Phosphoric acid
    (B) Superphosphate
    (C) Phosphorous
    (D) Triple superphosphate

8. Lower temperature and large excess of ammonia in urea melt
    (A) Increases biuret formation
    (B) Decreases biuret formation
    (C) Is undesirable
    (D) Does not effect biuret formation

9. Which of the following is the costliest method for commercial production of hydrogen for ammonia synthesis?
    (A) H2 separation from coke oven gas
    (B) Steam reforming of naphtha
    (C) Cracking of natural gas
    (D) Electrolysis of water

10. Bio-fertilizers are cheaper, renewable and pollution free. They improve the __________ of the soil.
    (A) Nutrient supply
    (B) Texture
    (C) Water holding capacity
    (D) All (a), (b) and (c)

11. Urea is formed only
    (A) In liquid phase
    (B) In vapour phase
    (C) At very high temperature
    (D) At very low pressure (vacuum)

12. Montecatini process is used for the manufacture of
    (A) Nitric acid
    (B) Phosphoric acid
    (C) Urea
    (D) Calcium ammonium nitrate (CAN)

13. A mixture of phosphate rock __________ is heated in an electric furnace to produce phosphorous.
    (A) Salt & coke
    (B) Sand & coke
    (C) And coke
    (D) And sand

14. Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium
    (A) Carbonate
    (B) Phosphate
    (C) Bicarbonate
    (D) Silicate

15. ________ is the most suitable fertilizer for paddy.
    (A) Urea
    (B) Ammonium sulphate
    (C) Superphosphate
    (D) Potassium nitrate

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