ECAT Pre Computer Science Chapter 21 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 21 Nuclear Physics

Try The MCQ's Test For ECAT Physics Chapter 21 Nuclear Physics

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ECAT Physics Chapter 21 Nuclear Physics

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Question # 1

In radioactive decay, the new element which is formed due to the disintegration of original element is called

Question # 2

The energy is found from Einstein's mass energy relation is called

Question # 3

Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:

Question # 4

The missing mass which is converted to energy in the formation of nucleus, is called

Question # 5

Binding energy per nucleus is

Question # 6

Gamma rays consist of steam of

Question # 7

The half life of radioactive substances depends upon

Question # 8

Rutherford performed an experiment on nuclear reactions in:

Question # 9

γ-rays behave like a particle because they explain the

Question # 10

Mass of proton is

Question # 11

The chemical properties of all the isotopes of an elements are

Question # 12

Radiation detector are used to

Question # 13

Rate of decay is actually described by.

Question # 14

Electrons are

Question # 15

The counter, which also provides the power to the G.M. tube is called:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The number of all the protons and neutrons in a nucleus is known as
A. atomic number
B. mass number
C. charge number
D. none of these
2 Beta particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
3 Phenomenon of radioactivity is due to disintegration of
A. nucleus
B. neutron
C. proton
D. molecule
4 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
5 The chemical properties of all the isotopes of an elements are
A. same
B. different
C. slightly different
D. none of these
6 When certain nucleus emits anα particle, its mass number:
A. Increases by one
B. Decreases by one
C. Remain same
D. Decreases by four
7 Neutron was suggested to be in the nucleus by:
A. Rutherford in 1920
B. Bohar in 1913
C. Dirac in 1928
D. Anderson in 1932
8 Referring to the above figure, we can say that of all the elements, the most stable element is
A. Phosphours
B. Iron
C. uranium
D. Lithium
9 Rate of decay is actually described by.
A. Half line
B. Decay constant
C. Mean life
D. Total life
10 Gamma rays consist of steam of
A. electron
B. proton
C. photons
D. all of these

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