10th Standard English Medium Science Subject Atoms and Molecules Book Back 1 Mark Questions with Solution Part - I

10th Standard

    Reg.No. :
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Science

Time : 00:30:00 Hrs
Total Marks : 5
    5 x 1 = 5
  1. Which of the following has the smallest mass?

    (a)

    6.023 × 1023 atoms of He

    (b)

    1 atom of He

    (c)

    2 g of He

    (d)

    1 mole atoms of He

  2. The volume occupied by 4.4 g of CO2 at S.T.P

    (a)

    22.4 litre

    (b)

    2.24 litre

    (c)

    0.24 litre

    (d)

    0.1 litre

  3. Which of the following represents 1 amu?

    (a)

    Mass of a C – 12 atom

    (b)

    Mass of a hydrogen atom

    (c)

    1/12th of the mass of a C – 12 atom

    (d)

    Mass of O – 16 atom

  4. The volume occupied by 1 mole of a diatomic gas at S.T.P is

    (a)

    11.2 litre

    (b)

    5.6 litre

    (c)

    22.4 litre

    (d)

    44.8 litre

  5. The gram molecular mass of oxygen molecule is

    (a)

    16 g

    (b)

    18 g

    (c)

    32 g

    (d)

    17 g

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