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    CBSE

    Subject

    Chemistry
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    NEET Chemistry : Hydrogen

    Multiple Choice Questions

    61.

    The ortho and para hydrogen differ in respect of which of the following ?

    • In the molecular weight

    • In the nature of spin of protons

    • In the nature of spin of electrons

    • In the number of protons

    Answer
    • 62.

    Alums are used for

    • tanning of leather

    • coagulation of blood

    • purification of water

    • all of the above

    Answer
    • 63.

    How many neutrons are present in tritium nucleus?

    • 2

    • 3

    • 1

    • 0

    Answer
    • 64.

    Water gas is :

    • CO + N2

    • CO + CO2 + CH4

    • CO2 + N2

    • CO + H2

    Answer
    • 65.

    Permanent hardness can be removed by adding

    • Cl2

    • Na2CO3

    • Ca(OCl)Cl

    • K2CO3

    Answer
    • 66.

    Which gas is evolved by the treatment of magnesium with very dilute solution of HNO3?

    • N2

    • NO2

    • H2

    • H2O

    Answer
    • 67.

    The method used to remove temporary hardness of water is :

    • Clark's method

    • Ion-exchange method

    • Synthetic resins method

    • Calgon's method

    Answer
    • 68.

    The high boiling point of water is due to which reason:

    • co-ordinate bonding

    • covalent bond

    • electrostatic force of attraction

    • hydrogen bonding

    Answer
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