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Chemical Engineering :: Chemical Process

  1. How much temperature is maintained during quicklime manufacture in the calcination zone of the vertical shaft kiln?

  2. A.

     500°C

    B.

     750°C

    C.

     1000°C

    D.

     1500°C


  3. Pick out the wrong statement.

  4. A.

     Low intensity explosives are also called propellants, whereas high intensity explosive are called detonators

    B.

     Gun powder comprises of 75% salt petre, 15% charcoal and 10% sulphur

    C.

     Lead azide is a popular military explosive

    D.

     TNT is a hygroscopic explosive having very high melting point and is non-toxic to human being


  5. Neon gas is

  6. A.

     Flammable in nature

    B.

     Used in color discharge tube

    C.

     Filled in lamps having tungsten filament

    D.

     All of the above


  7. Neoprene is a

  8. A.

     Monomer

    B.

     Synthetic rubber

    C.

     Polyester

    D.

     None of these


  9. Neoprene is the trade name of

  10. A.

     Polyurathane

    B.

     Phenol formaldehyde

    C.

     Polychloroprene

    D.

     Styrene-butadiene rubber


  11. H₂S is scrubbed from refinery gases by absorption using

  12. A.

     Dilute H₂SO₄

    B.

     Ethanol amine

    C.

     Chilled water

    D.

     Tri-butyl phosphate


  13. Ceramics are produced from silicates or clayish materials: Which of the following is not a ceramic material?

  14. A.

     Slag cement

    B.

     Glasses

    C.

     Porcelain/Potteries

    D.

     Teflon


  15. Widely used method for the conditioning of boiler feed water is the

  16. A.

     Cold lime process

    B.

     Coagulation

    C.

     Hot-lime soda process

    D.

     Sequestration


  17. The major constituent of black liquor generated during paper manufacture is sodium

  18. A.

     Sulphate

    B.

     Carbonate

    C.

     Hydroxide

    D.

     Bi-carbonate


  19. Boiling of water containing temporary hardness produces

  20. A.

     CO₂

    B.

     CaSO₄

    C.

     CaHCO₃

    D.

     None of these