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Chemistry - section - 2
  1. The increasing abundance of green house gases in atmosphere has led to the following effect except

    2. A.

     Global warming
    B.

     Depletion of ozone layer in the stratosphere
    C.

     Oxygen fertilization effect
    D.

     Carbon dioxide ferilization effect

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  2. The source of energy that causes the least global warming is

    3. A.

     Coal
    B.

     Geothermal energy
    C.

     Natural Gas
    D.

     Petroleum

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  3. Which of the following fuels causes minimum environmental pollution?

    4. A.

     Diesel
    B.

     Kerosene
    C.

     Hydrogen
    D.

     Coal

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  4. Biofertilizers convert nitrogen to ________ .

    5. A.

     Nitrates
    B.

     Ammonia
    C.

     Nitrogenase
    D.

     Amino acids

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  5. The elements in the modern Periodic table are arranged according to their

    6. A.

     Mass number
    B.

     Neutron number
    C.

     Atomic number
    D.

     Atomic Weight

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  6. Periodic table contains how many periods

    7. A.

     6
    B.

     7
    C.

     8
    D.

     10

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  7. Which one is the lightest element in the periodic table

    8. A.

     Hydrogen
    B.

     Helium
    C.

     Oxygen
    D.

     Carbon

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  8. Which one of the following is most electronegative?

    9. A.

     Carbon
    B.

     Silicon
    C.

     Lead
    D.

     Tin

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  9. Periodic table contains how many groups

    10. A.

     16
    B.

     17
    C.

     18
    D.

     19

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  10. Total number of elements in the Periodic table

    11. A.

     112
    B.

     115
    C.

     118
    D.

     127

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