Atomic Structure - General Knowledge Questions

1 .
Who of the following was awarded the Nobel Prize for his measurement of elementary electronic charge?
A)
JJ Thomson
B)
Rutherford
C)
Robert Millikan
D)
James Chadwick

Correct Answer :   Robert Millikan

2 .
Electrons that orbit outermost shell of an atom are called?
A)
Neutrons
B)
Electrons
C)
Electron Coefficients
D)
Valence electrons

Correct Answer :   Valence electrons

3 .
What is the time during which one half of a number of radioactive species decays or one half of their activity ceases?
A)
Semi life
B)
Half Life
C)
Critical life
D)
Super Critical State

Correct Answer :   Half Life

4 .
Electron was discovered by
A)
Thomson
B)
Rutherford
C)
Chadwick
D)
Milliken

Correct Answer :   Thomson

5 .
Almost the entire mass of an atom is concentrated in the
A)
electrons
B)
protons
C)
neutrons
D)
nucleus

Correct Answer :   nucleus

6 .
What is the mass number of an atom which contains 28 protons, 28 electrons, and 34 neutrons?
A)
28
B)
56
C)
62
D)
90

Correct Answer :   62

7 .
Which isotope of hydrogen contains only one proton and no neutron in its nucleus?
A)
tritium
B)
deuterium
C)
protium
D)
None of the above

Correct Answer :   protium

8 .
During a chemical reaction, atomic number
A)
changes
B)
remains same
C)
changes alternately
D)
changes and then is restored

Correct Answer :   remains same

9 .
The net neutrons produced per initial neutron accounting for all possible losses is called?
A)
Multiplication factors
B)
Covalent bond
C)
Bombardment
D)
Half life

Correct Answer :   Multiplication factors

10 .
To disrupt a nucleus and separate in into its component nucleons, energy must be supplied from outside and this energy is called?
A)
Bonding energy
B)
Kinetic energy
C)
Binding energy
D)
Nuclear energy

Correct Answer :   Binding energy

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