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Chemical Engineering :: Chemical Process

  1. Electric bulbs are made of __________ glass.

  2. A.
    jena
    B.
    flint
    C.
    crookes
    D.
    pyrex

  3. Which of the following is used as a binding material in soap to improve soap texture ?

  4. A.
    Rosin
    B.
    Borax
    C.
    Benzyl acetate
    D.
    Sodium carbonate

  5. An alkali metal salt of palmitic acid is known as

  6. A.
    soap
    B.
    metallic soap
    C.
    detergent
    D.
    alkaloid

  7. Washing soda is chemically represented by

  8. A.
    Na2CO3
    B.
    Na2CO3.H2O
    C.
    Na2CO3.10H2O
    D.
    NaHCO3

  9. Magnesium and calcium __________ cause temporary hardness of water.

  10. A.
    carbonates
    B.
    bicarbonates
    C.
    phosphates
    D.
    sulphates

  11. Which form of sulphur is the most stable at room temperature ?

  12. A.
    Plastic
    B.
    Monoclinic
    C.
    Rhombic
    D.
    Flowers of sulphur

  13. Vegetable oils and fats basically differ in their

  14. A.
    density ranges
    B.
    physical state
    C.
    chemical composition
    D.
    chemical properties

  15. Average sulphur content in Indian pyrites is about __________ percent.

  16. A.
    15
    B.
    35
    C.
    55
    D.
    70

  17. Oil is a/an

  18. A.
    mixture of glycerides.
    B.
    mixture of glycerides of fatty acids.
    C.
    solid at normal temperature.
    D.
    ester of alcohols other than glycerine.

  19. Which of the following is a constituent of coffee ?

  20. A.
    Caffeine
    B.
    Nicotine
    C.
    Calgon
    D.
    Lignin