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Chemical Process - Section-15
  1. Carborundum consists mainly of

    2. A.

     Bauxite
    B.

     Silicon carbide
    C.

     Boron carbide
    D.

     Calcium carbide

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  2. CaSO₄ .1/2 H₂O is known as

    3. A.

     Blue vitriol
    B.

     Plaster of Paris
    C.

     Gypsum
    D.

     Zeolite

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  3. Saponification number of an oil or fat

    4. A.

     Gives an idea about its molecular weight
    B.

     Is inversely proportional to its molecular weight
    C.

     Detects its adulteration
    D.

     All of the above

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  4. The difference between saponification value and acid value is

    5. A.

     Called ester value
    B.

     Always negative
    C.

     Constant for all fatty oils
    D.

     None of these

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  5. Hydrogenation of oil takes place in a/an __________ reactor.

    6. A.

     Autothermal
    B.

     Trickle bed
    C.

     Plug flow
    D.

     None of these

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  6. Celluloid is chemically

    7. A.

     Cellulose acetate
    B.

     Regenerated cellulose
    C.

     Cellulose nitrate
    D.

     Cellulose acetate butyrate

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  7. Cement mainly contains

    8. A.

     CaO, SiO₂, Al2O₃
    B.

     MgO, SiO₂, K₂O
    C.

     Al2O₃, MgO, FE₂O₃
    D.

     CaO, MgO, K₂O

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  8. Chemical formula of oleum is

    9. A.

     H₂SO₃
    B.

     H₂SO₄
    C.

     H₂S₂O₇
    D.

     H₂SO₇

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  9. Chemical name of 'alum' is

    10. A.

     Barium sulphate
    B.

     Aluminium sulphate
    C.

     Aluminium chloride
    D.

     Calcium sulphate

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  10. Chemical name of soda ash is

    11. A.

     Sodium bicarbonate
    B.

     Sodium thiosulphate
    C.

     Potassium carbonate
    D.

     None of these

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