SSC General Science & Technology Sample Paper NCERT Sample Paper-2

  • question_answer
    Hydrogen and helium are kept in two identical bottles at room temperature and atmospheric pressure:

    A)  Both contain the same number of atoms

    B)  The number of hydrogen atoms will be half of the number of atoms of helium

    C)  The number of atoms of hydrogen will be double the number of atoms of helium

    D)  None of the above statements is true

    Correct Answer: C

    Solution :

    [c] Hydrogen gas is diatomic (H2). Helium gas is monatomic (He). Hydrogen will therefore have twice the number of atoms.

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