T1 - Atomic Structure English Medium Free Online Test 1 Mark Questions with Answer Key 2020 - 2021

7th Standard

    Reg.No. :
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Science

Time : 00:10:00 Hrs
Total Marks : 10

    Part A

    10 x 1 = 10
  1. The subatomic particle revolve around the nucleus is _______.

    (a)

    Atom

    (b)

    Neutron

    (c)

    Electron

    (d)

    Proton

  2. The atomic number of an atom is ________

    (a)

    Number of neutrons

    (b)

    Number of protons

    (c)

    Total number of protons and neutrons

    (d)

    Number of atoms

  3. The average diameter of an atom is ____________

    (a)

    10-8 m

    (b)

    1 m

    (c)

    1 Ao

    (d)

    10-5 m

  4. ____________ is the smallest unit used to measure small lengths

    (a)

    Metre

    (b)

    Nanometre

    (c)

    Millimetre

    (d)

    Centimetre

  5. One metre is equal to ___________ nm.

    (a)

    109

    (b)

    108

    (c)

    105

    (d)

    1010

  6. J.J Thomson's atom model is also called as _____________

    (a)

    Plum pudding model

    (b)

    gold foil

    (c)

    alpha particle

    (d)

    none

  7. Proton was discovered by _______________

    (a)

    Rutherford

    (b)

    Goldstein

    (c)

    Chadwick

    (d)

    J.J. Thomson

  8. Neutron was discovered by _____________

    (a)

    Dalton

    (b)

    J.J. Thomson

    (c)

    Chadwick

    (d)

    Rutherford

  9. The combining property of atom is called ____________

    (a)

    atomic number

    (b)

    mass number

    (c)

    valency

    (d)

    molecule

  10. Atomic number is the number of __________ is an atom.

    (a)

    electron

    (b)

    proton

    (c)

    neutron

    (d)

    none

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