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

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

Question # 2

Mass of proton is

Question # 3

Mass of proton is of order of

Question # 4

The emission of radiations take place in elements, having charge number greater than

Question # 5

The half lie of radium-226 is

Question # 6

Hydrogen atom with only one proton and one neutron in its nucleus, and one electron, is called

Question # 7

The time required for a radioactive material to decrease in active by one half is called

Question # 8

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

Question # 9

The range of particle depends upon the factor

Question # 10

U-238 present in the natural uranium is about:

Question # 11

The energy acquired by a mass of 1g moving with the speed of light is

Question # 12

Neutron was discovered in

Question # 13

Alfa particles are

Question # 14

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

Question # 15

Radioactivity is

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The figure 1.007276μ shows the mass of an:
A. Atom
B. Positron
C. Electron
D. Neutron
2 The time required for a radioactive material to decrease in active by one half is called
A. half time
B. half life
C. disintegration time
D. mean life
3 Neutron was disvovered by:
A. Rutherford in 1920
B. Chadwick in 1922
C. Bohr in 1913
D. Compton in 1927
4 A curie represents a very strong source of
A. α-particle
B. β-particle
C. γ-particle
D. none of these
5 A particle having the mass of electron and charge of a proton is called a
A. photon
B. position
C. antiproton
D. antineutrino
6 Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:
A. 50
B. 100
C. 150
D. 200
7 When certain nucleus emits anα particle, its mass number:
A. Increases by one
B. Decreases by one
C. Remain same
D. Decreases by four
8 The chemical properties of an element depends upon the number of
A. electron
B. position
C. photons
D. neutrons
9 Rate of decay is actually described by.
A. Half line
B. Decay constant
C. Mean life
D. Total life
10 Nucleus consists of
A. proton and neutron
B. protons and electron
C. electron and neutron
D. protons only

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