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Chemical Engineering :: Chemical Process

  1. Out of the following processes of paper pulp manufacture, the maximum corrosion problem in digestion & handling equipments is encountered in the __________ process.

  2. A.

     Mechanical

    B.

     Sulphate/kraft

    C.

     Sulphite

    D.

     Neutral sulphite semi-chemical


  3. Styrene butadiene rubber (SBR) is

  4. A.

     A natural rubber

    B.

     A synthetic polymer

    C.

     A synthetic monomer

    D.

     Another name of silicone rubber


  5. Starting material for the production of styrene butadiene rubber (SBR) is

  6. A.

     Ethyl alcohol

    B.

     Ethylene

    C.

     Both A & B

    D.

     Neither A nor B


  7. Permanent hardness of water is due to the presence of calcium & magnesium

  8. A.

     Bi-carbonates

    B.

     Sulphates & chlorides

    C.

     Carbonate

    D.

     None of these


  9. Riboflavin is a/an

  10. A.

     Vitamin

    B.

     Analgesic drug

    C.

     Anaesthetics

    D.

     Anti-malarial drug


  11. Yellow glycerine is made into white, using

  12. A.

     Activated carbon

    B.

     Diatomaceous earth

    C.

     Bauxite

    D.

     Bentonite


  13. Percentage of glycerene present in the spent lye obtained during soap manufacture is about

  14. A.

     0.5

    B.

     5

    C.

     20

    D.

     35


  15. Gun powder, which is an explosive comprises of charcoal, sulphur and

  16. A.

     Glycerene

    B.

     Salt petre

    C.

     Nitro glycerene

    D.

     Dynamite


  17. Adipic acid is an intermediate in the manufacture of

  18. A.

     Perspex

    B.

     Nylon-66

    C.

     Polystyrene

    D.

     Bakelite


  19. Proximate analysis of coal determines its __________ content.

  20. A.

     Moisture, ash, sulphur & volatile matter

    B.

     Moisture & volatile matter

    C.

     Moisture, sulphur, nitrogen & fixed carbon

    D.

     None of these