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

A curie represents a very strong source of

Question # 2

The unit of decay constant is:

Question # 3

Which of the following material has smaller has life

Question # 4

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

Question # 5

During the nuclear changes, the law/s of conservation that hold/s are that of:

Question # 6

Structure of the nucleus was explained by

Question # 7

Referring to the above figure, we can say that of all the elements, the most stable element is

Question # 8

Nuclei that have the same charge number but different mass number are called

Question # 9

Three quarks make:

Question # 10

Nucleus consists of

Question # 11

Alfa , beta and gamma rays are emitted from a radio-active substance

Question # 12

The diameter of an atom is of the order

Question # 13

Heavy water is made of one oxygen atom and two atoms of:

Question # 14

The half lie of radium-226 is

Question # 15

The most abundant isotope of neon is

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 γ-rays are
A. electrostatic waves
B. electromagnetic waves
C. heavy particles
D. longitudinal waves
2 Neutron was disvovered by:
A. Rutherford in 1920
B. Chadwick in 1922
C. Bohr in 1913
D. Compton in 1927
3 The number of protons inside a nucleus is called
A. mass number
B. atomic weight
C. atomic number
D. none of these
4 The range ofβ-particle in air is greater than that ofα-particle by
A. 1000 times
B. 100 times
C. 15 times
D. 10 times
5 Rutherford performed an experiment on nuclear reactions in:
A. 1718 A.D
B. 1818 A.D
C. 1918 A.D
D. 2001 A.D.
6 Proton was discovered by Rutherford in
A. 1915
B. 1906
C. 1910
D. 1920
7 The number if neutrons in the nucleus of 92U235are
A. Infinite
B. 92
C. 235
D. 143
8 A particle having the mass of electron and charge of a proton is called a
A. photon
B. position
C. antiproton
D. antineutrino
9 The chemical properties of all the isotopes of an elements are
A. same
B. different
C. slightly different
D. none of these
10 The penetration power ofβ-particle is
A. zero
B. less thanα-particle
C. equal toα-particle
D. greater thanα-particle

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