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Chemistry - section - 2
  1. A subshell with l = 2 can take up

    2. A.

     3 electron
    B.

     5 electron
    C.

     8 electron
    D.

     10 electron

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  2. Two electrons in an orbital are differentiated by which of the following ?

    3. A.

     Magnetic quantum number
    B.

     Spin quantum number
    C.

     Principal quantum number
    D.

     Azimuthal quantum number

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  3. When cathode rays strike a target of high atomic weight, they give rise to

    4. A.

     alpha-rays
    B.

     beta and gamma rays
    C.

     X-rays
    D.

     Positive rays

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  4. How many electrons can be accommodated in d-orbital?

    5. A.

     3
    B.

     6
    C.

     8
    D.

     10

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  5. The scientist who experimentally proved the existence of positron is

    6. A.

     Fermi
    B.

     Anderson
    C.

     Bohr
    D.

     Bethe

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  6. When there are two electrons in the same orbital, they have:

    7. A.

     Same spin
    B.

     Opposite spin
    C.

     Same or opposite spin
    D.

     No spin

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  7. The antiparticle of an electron is

    8. A.

     Positron
    B.

     Proton
    C.

     Alpha particles
    D.

     Beta particles

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  8. Nucleons are regarded as composites sub-particles known as

    9. A.

     Mesons
    B.

     Quarks
    C.

     Leptons
    D.

     Photons

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  9. Conduction band electrons have more mobility than holes because they

    10. A.

     Are lighter
    B.

     Experience collision less frequently
    C.

     Have negative charge
    D.

     Need less energy to move them

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  10. Which one of the following has greatest mass ?

    11. A.

     Electron
    B.

     Proton
    C.

     Neutron
    D.

     Hydrogen nucleus

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