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Chemical Engineering :: Chemical Process

  1. Direct conversion of chemical energy into electrical energy is done in a

  2. A.

     Magnetohydrodynamic (MHD) generator

    B.

     Fuel cell

    C.

     Fast breeder reactor

    D.

     None of these


  3. Alcohol content in freshly prepared natural and fortified wine may be respectively around __________ percent.

  4. A.

     7-14 and 14-30

    B.

     7-14 and 40-50

    C.

     14 - 30 and 40-50

    D.

     10 - 20 and 40 - 50


  5. Resistance to fusion of the refractory under a steady rising temperature condition is called

  6. A.

     Spalling

    B.

     Refractoriness

    C.

     Both A & B

    D.

     Neither A nor B


  7. Enamels

  8. A.

     Give good glossy finish

    B.

     Are same as varnish

    C.

     Are prepared from non-drying oil

    D.

     Do not contain pigment


  9. The most widely used coagulant for removing suspended impurities from water is

  10. A.

     Bleaching powder

    B.

     Chlorine

    C.

     Calcium sulphate

    D.

     Alum


  11. Isopropyl benzene produced by alkylation of benzene with propylene is known as

  12. A.

     Neoprene

    B.

     Cumene

    C.

     Gelatin

    D.

     Mercaptans


  13. Coloured glass is obtained by mixing of colored salts. Addition of __________ oxide is done to impart greenish blue color to the glass.

  14. A.

     Chromium

    B.

     Arsenic

    C.

     Copper

    D.

     Mangnese


  15. A bio-catalyst produced by living cells which acts independent of the cell is called a/an

  16. A.

     Substrate

    B.

     Enzyme

    C.

     Nutrient

    D.

     None of these


  17. Pick out the wrong statement pertaining to nitric acid.

  18. A.

     About 90% of nitric acid is manufactured by Ostwald

    B.

     It is a strong mono basic acid which reacts with almost all the metals except noble metals

    C.

     Yellow color of impure nitric acid is because of dissolved oxides of nitrogen (mainly NO₂)

    D.

     Arc process of nitric acid manufacture is economical as compared to Ostwald


  19. Exothermic neutralisation reaction between caustic soda and dodecylbenzene sulphonic acid produces sodium dodecylbenzene sulphate, which is a/an

  20. A.

     Explosive

    B.

     Soap

    C.

     Detergent

    D.

     Analgesic drug