22nd Nov Atoms and Nuclei Quiz 2 – Punjab Meritorious School Preparation Portal

Welcome to your 22nd Nov Atoms and Nuclei Quiz 2 CBT TEST

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The total energy of electron in the ground state of hydrogen atom is -13.6 eV. The kinetic energy of an electron in the first excited state is

6.8 eV

13.6 eV

1.7 eV

3.4 eV.

a + b + c

a + b - c

c – a - b

c + a - b

Solar is mainly caused due to

gravitational contraction

burning of hydrogen in the oxygen

fission of uranium present in the Sun

fusion of protons during synthesis of heavier elements

The ionization energy of hydrogen atom is 13.6 eV. Following Bohr's theory, the energy corresponding to a transition between 3rd and 4th orbit is

3.40 eV

1.51 eV

0.85 eV

0.66 eV

The volume occupied by an atom is greater than the volume of the nucleus by a factor of about

The volume occupied by an atom is greater than the volume of the nucleus by a factor of about

The volume occupied by an atom is greater than the volume of the nucleus by a factor of about

The volume occupied by an atom is greater than the volume of the nucleus by a factor of about

The volume occupied by an atom is greater than the volume of the nucleus by a factor of about

How does the binding energy per nucleon vary with the increase in the number of nucleons?

Increases continuously with mass number

Decreases continuously with mass number

First decreases and then increases with increase in mass number

First increases and then decreases with increase in mass number

The mass number of a nucleus is

sometimes less than and sometimes more than its atomic number

always less than its atomic number

always more than its atomic number

sometimes equal to its atomic number

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