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General Science - Measurements
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General Science - Elements and Metals
General Science - Synthetic Materials

  1. Potassium nitrate is used in

    2. A.
    medicine
    B.
    fertiliser
    C.
    salt
    D.
    glass

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  2. Permanent hardness of water may be removed by the addition of

    3. A.
    sodium carbonate
    B.
    alum
    C.
    potassium permanganate
    D.
    lime

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  3. Soda water contains

    4. A.
    carbonic acid
    B.
    sulphuric acid
    C.
    carbon dioxide
    D.
    nitrous acid

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  4. The most important ore of aluminium is

    5. A.
    galena
    B.
    calamine
    C.
    calcite
    D.
    bauxite

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  5. Most soluble in water is

    6. A.
    camphor
    B.
    sulphur
    C.
    common salt
    D.
    sugar

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  6. Which of the following was to be discovered first in the chromospheres of the sun?

    7. A.
    Krypton
    B.
    Xenon
    C.
    Neon
    D.
    Helium

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  7. Which of the following is in liquid form at room temperature?

    8. A.
    Lithium
    B.
    Sodium
    C.
    Francium
    D.
    Cerium

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  8. Sodium metal is kept under

    9. A.
    petrol
    B.
    alcohol
    C.
    water
    D.
    kerosene

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  9. Which of the following are the ingredients of gun metal?

    10. A.
    Iron, Zinc, Titanium
    B.
    Iron, tin
    C.
    Iron, Brass, Tin
    D.
    Copper, Tin

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  10. From which mineral is radium obtained?

    11. A.
    Rutile
    B.
    Haematite
    C.
    Limestone
    D.
    Pitchblende

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