Technology for Fertiliser Chemical Engineering - Set 06 - ObjectiveBooks

Technology for Fertiliser Chemical Engineering - Set 06

Practice Test: Question Set - 06

1. Nitrolime is chemically known as
    (A) Calcium nitrate
    (B) Ammonium nitrate
    (C) Calcium ammonium nitrate (CAN)
    (D) None of these

2. Nitrogenous fertilizer is required
    (A) During the early stage of growth to promote development of stem and leaves
    (B) For accelerating fruit formation in later stage of growth
    (C) To lessen the effect of excessive potash application
    (D) None of these

3. Ammonium phosphate is a __________ fertilizer.
    (A) Nitrogenous
    (B) Phosphatic
    (C) Complex
    (D) Mixed

4. In the manufacture of ortho-phosphoric acid by strong H2SO4 leaching wet process, keeping the reactor temperature above 100°C, results in the formation of undesirable
    (A) CaSO4 .½ H2O and CaSO4 crystals
    (B) Pyrophosphoric acid
    (C) Meta-phosphoric acid
    (D) All (a), (b) and (c)

5. Commercial fertilizers are available mostly in the form of
    (A) Powder
    (B) Granules
    (C) Lumps
    (D) Flakes

6. Reaction of phosphate rock with 98% H2SO4 produces
    (A) Ortho-phosphoric acid
    (B) Superphosphate
    (C) White phosphorous
    (D) None of these

7. A fertilizer plant is classified as a gas based fertilizer plant, when it uses __________ gas as a source of hydrogen for the manufacture of ammonia.
    (A) Coke oven
    (B) Producer
    (C) Natural
    (D) Coal

8. Reaction of dilute sulphuric acid with phosphate rock produces
    (A) Phosphoric acid
    (B) Superphosphate
    (C) Triple superphosphate
    (D) Gypsum

9. Catalyst used in ammonia synthesis uses __________ as a promoter.
    (A) Pt
    (B) K2O
    (C) Al2O3
    (D) Ni

10. Neutralization of nitric acid with ammonia to produce ammonium nitrate is a/an __________ reaction.
    (A) Catalytic
    (B) Endothermic
    (C) Exothermic
    (D) Autocatalytic

11. Which is the most suitable fertilizer for paddy?
    (A) CAN
    (B) Ammonium sulphate
    (C) Ammonium nitrate
    (D) Superphosphate

12. Triple superphosphate is chemically represented as
    (A) CaF2.3Ca3(PO4)2
    (B) 3Ca3(PO4)2
    (C) Ca(PO3)2
    (D) Ca(H2PO4)2

13. Potassic fertilizers
    (A) Are useful during early stage of the plant growth
    (B) Stimulate early growth and accelerate seeding
    (C) Help in development of starches of potatoes and grain
    (D) None of these

14. Vapor phase reaction of ammonia & nitric acid to produce ammonium nitrate is termed as the __________ process.
    (A) Haber's
    (B) Stengel
    (C) Le-chatelier's
    (D) Du-pont's

15. Maximum stability of white phosphorous is at
    (A) Very high pressure
    (B) Atmospheric pressure
    (C) Room temperature
    (D) > 600°C

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