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Chemical Engineering :: Fertiliser Technology

  1. Dehydration of ammonium carbamate produces

  2. A.

     Urea

    B.

     Biuret

    C.

     Ammonia water

    D.

     None of these


  3. Which fertiliser is made (using coke oven gas) in by products plant of an integrated steel plant?

  4. A.

     Urea

    B.

     CAN

    C.

     Ammonium sulphate

    D.

     Superphosphate


  5. Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium

  6. A.

     Carbonate

    B.

     Phosphate

    C.

     Bicarbonate

    D.

     Silicate


  7. Pick out the wrong statement.

  8. A.

     Dehydration of ammonium carbamate to produce urea is endothermic

    B.

     Direct use of liquid ammonia as a fertiliser for a tropical country like India is suitable

    C.

     Gypsum (CaSO₄. 2H₂O) is obtained as a by-product in the wet process for manufacture of ortho-phosphoric acid

    D.

     Phosphate rock when reacted with dilute H₂SO₄ produces superphosphate


  9. Nitrogenous fertiliser is required

  10. 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


  11. The fertiliser plant getting hydrogen by electrolysis of water is situated at

  12. A.

     Namrup

    B.

     Nangal

    C.

     Rourkela

    D.

     Korba


  13. In calcium ammonium nitrate (CAN) fertil-ser

  14. A.

     Nitrate nitrogen is quick acting

    B.

     Ammoniacal nitrogen is quick acting

    C.

     Nitrate nitrogen is slower acting

    D.

     None of these


  15. Raw materials for nitric acid manufacture are

  16. A.

     Hydrogen peroxide, air and water

    B.

     Anhydrous ammonia and air

    C.

     Anhydrous ammonia, air and water

    D.

     Wet ammonia, air and water


  17. H₃PO₄ is the chemical formula of __________ phosphoric acid.

  18. A.

     Pyro

    B.

     Ortho

    C.

     Meta

    D.

     None of these


  19. A fertiliser plant is classified as a gas based fertiliser plant, when it uses __________ gas as a source of hydrogen for the manufacture of ammonia.

  20. A.

     Coke oven

    B.

     Producer

    C.

     Natural

    D.

     Coal