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

γ-rays behave like a particle because they explain the

Question # 2

β-particles are easily deflected by collisions than heavy

Question # 3

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

Question # 4

If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by

Question # 5

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

Question # 6

The range ofβ-particle in air is greater than that ofα-particle by

Question # 7

A pair of quark and antiquark makes a:

Question # 8

Nucleus consists of

Question # 9

A particle having the mass of electron and charge of a proton is called a

Question # 10

The rate of decay of radioactive substance

Question # 11

A mass difference of 0.0012 u is equivalent to and energy of:

Question # 12

Mass of neutron is

Question # 13

For an atom having atomic number 'Z' and atomic weight 'A', the number of neutrons in the nucleous is

Question # 14

The amount of energy equivalent to 1 a.m.u is

Question # 15

When radioactive nucleus emits aβ-particle, the proton-neutron ratio

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Nucleus of a hydrogen atom may contain:
A. One neutron only
B. Two protons and one neutron
C. Two protons and two neutrons
D. Aany of above
2 If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be
A. Equal to 1
B. Less than 1
C. Greater than 1
D. Infinity
3 The penetration power ofβ-particle is
A. zero
B. less thanα-particle
C. equal toα-particle
D. greater thanα-particle
4 Binding energy per nucleus is
A. greater for heavy nucleus
B. least for heavy nucleus
C. greatest for light nuclei
D. decreases for medium weight niclei
5 A mass spectrograph sort out
A. molecules
B. atoms
C. elements
D. isotopes
6 The counter, which also provides the power to the G.M. tube is called:
A. Thin mica window
B. thin glass window
C. Airy window
D. Wooden window
7 Rutherford performed an experiment on nuclear reactions in:
A. 1718 A.D
B. 1818 A.D
C. 1918 A.D
D. 2001 A.D.
8 In radioactive decay, the new element which is formed due to the disintegration of original element is called
A. element
B. daughter element
C. parent element
D. none of these
9 An alpha particle has a charge of
A. +2e
B. -2e
C. -e
D. +3e
10 The number of protons inside a nucleus is called
A. mass number
B. atomic weight
C. atomic number
D. none of these

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