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Chemical Engineering :: Chemical Process

  1. Presence of H₂S in raw water (to be chlorinated) results in the

  2. A.

     Reduced softening capacity of zeolite

    B.

     Increased dosage of chlorine to provide a disinfecting residual in the water

    C.

     Easy removal of its hardness

    D.

     None of these


  3. Platinum is a versatile catalyst for many processes in chemical industries. It is highly prone to be poisoned by the presence of

  4. A.

     Carbon

    B.

     Arsenic

    C.

     Lead

    D.

     Sulphur


  5. The temperature in the calcium carbide furnace is __________ °C.

  6. A.

     200-300

    B.

     700-850

    C.

     2000-2200

    D.

     4000-4500


  7. Bio-degradable detergents

  8. A.

     Can be readily oxidised

    B.

     Pose problem in sewerage plant

    C.

     Have an isoparaffinic structure

    D.

     Should not be used as it spoils the cloth


  9. Bitterns is a/an

  10. A.

     Unsaturated fat

    B.

     Starting material for the production of iodine

    C.

     By-product of chlor-alkali industry

    D.

     None of these


  11. Which is the most suitable dye for synthetic fibres?

  12. A.

     Acid dye

    B.

     Azoic dye

    C.

     Pigment dye

    D.

     Mordant dye


  13. Blue vitriol is chemically

  14. A.

     Copper sulphate

    B.

     Ferrous sulphate

    C.

     Copper nitrate

    D.

     Aluminium sulphate


  15. Presence of carbonaceous matter in the sewage

  16. A.

     Causes reduction in its dissolved oxygen content thereby endangering the life of aquatic creatures

    B.

     Reduces sulphate ions to sulphides causing obnoxious smell

    C.

     Increases the quantity of chlorine used for its purification

    D.

     All of the above


  17. Bordeaux mixture is a/an

  18. A.

     Fertiliser

    B.

     Inorganic fungicide

    C.

     Insecticide

    D.

     Explosive


  19. The noble gas which occurs most abundantly in the atmosphere is

  20. A.

     Helium

    B.

     Neon

    C.

     Krypton

    D.

     Argon