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Chemistry - section - 2
  1. Which of the following is not a nitrogenous fetiliser?

    2. A.

     Ammonium sulphate
    B.

     Urea
    C.

     Ammonium nitrate
    D.

     Superphosphate

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  2. Which one of the following is used as a sowing agent in the preparation of soft drinks?

    3. A.

     Phosphoric acid
    B.

     Phosphorus acid
    C.

     Salicylic acid
    D.

     Boric acid

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  3. Pyrethrin used in mosquito coil is obtained from

    4. A.

     A seed plant
    B.

     An insect
    C.

     A bacterium
    D.

     A fungus

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  4. What is a common name for the substance which irritates lachrymal glands ?

    5. A.

     Tear Gas
    B.

     Laughing Gas
    C.

     Anaesthetic Gas
    D.

     Noble Gas

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  5. The material used in solar cells contains

    6. A.

     Tin
    B.

     Silicon
    C.

     Caesium
    D.

     Thallium

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  6. Which of the following is used to iodise common salt ?

    7. A.

     Potassium iodide
    B.

     Iodine
    C.

     Potassium iodate
    D.

     Sodium iodide

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  7. A thick paste of cement, sand and water is called

    8. A.

     Concrete
    B.

     R.C.C.
    C.

     Mortar
    D.

     Kiln

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  8. What is the most commonly used substance in fluorescent tubes?

    9. A.

     Sodium oxide and argon
    B.

     Sodium vapour and neon
    C.

     Mercury vapour and argon
    D.

     Mercury oxide and neon

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  9. Tear gas is :

    10. A.

     Chloroprene
    B.

     Carbonyl chloride
    C.

     Nitrous oxide
    D.

     Bleaching powder

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  10. Tetra ethyle lead (TEL) is

    11. A.

     A catalyst in burning fossil fuel
    B.

     An antioxidant
    C.

     A reductant
    D.

     An antiknock compound

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