Home / Chemical Engineering / Chemical Process :: Section-15

Chemical Engineering :: Chemical Process

  1. Catalytic oxidation of toluene produces

  2. A.

     Styrene

    B.

     Phenol

    C.

     Benzene

    D.

     Tri-nitro-toluene


  3. Which of the following processes can remove both temporary as well as permanent hardness of water?

  4. A.

     Filtration

    B.

     Boiling

    C.

     Distillation

    D.

     None of these


  5. Which of the following is not responsible for causing permanent hardness of water?

  6. A.

     Ca(HCO₃)₂

    B.

     CaCl₂

    C.

     MgCl₂

    D.

     None of these


  7. Function of sodium thiosulphate (hypo) in development of photographic film/plate is to

  8. A.

     Brighten the faint images

    B.

     Remove metallic silver

    C.

     Convert silver chloride to silver

    D.

     Remove unexposed silver halide


  9. Liquor poisoning generally occurs due to the presence of __________ in it.

  10. A.

     Ethyl alcohol

    B.

     Impurities

    C.

     Methyl alcohol

    D.

     Carbonic acid


  11. Sulphur removal by heating of pyrite ore in presence of air is called its

  12. A.

     Reduction

    B.

     Roasting

    C.

     Calcination

    D.

     Smelting


  13. The metallic aluminium is obtained from pure alumina in the presence of fused cryolite by

  14. A.

     Electrolysis

    B.

     Electrolytic reduction

    C.

     Electrolytic oxidation

    D.

     None of these


  15. Reaction of calcium carbide with water produces a gas, which is used

  16. A.

     As an illuminant

    B.

     For metal cutting/welding

    C.

     Both A & B

    D.

     Neither A nor B


  17. Fusion of bauxite and __________ produces high alumina cement.

  18. A.

     Alum

    B.

     Limestone

    C.

     Coke

    D.

     Quartz


  19. Fusion of limestone and __________ produces high alumina cement.

  20. A.

     Sand

    B.

     Bauxite

    C.

     Quicklime

    D.

     Calcite