ECAT Pre General Science Physics Chapter 21 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 21 Nuclear Physics

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

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ECAT Pre General Science Physics Chapter 21 Nuclear Physics

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Question # 1

The isotope/s of hydrogen is /are:

Question # 2

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

Question # 3

The distance travelled byα-particle in a medium before coming to rest, is called

Question # 4

Neutrons are

Question # 5

When thorium nucleus emits aβ-particle, the daughter nucleus is called:

Question # 6

In radio-active decay, the original element which disintegrate to another element is called

Question # 7

How much time, theα-particle more massive than an electron

Question # 8

When a nucleus emits an alpha particle, it atomic mass decreased by

Question # 9

The unit of decay constant is

Question # 10

Marie curie and Pierre curie discovered:

Question # 11

When a charged particle passes through matter, it produces ionization, this effect is used in

Question # 12

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

Question # 13

Neutron was disvovered by:

Question # 14

For an atom having atomic number Z and atomic weight A, the charge on the nucleus is

Question # 15

The rate of decay of radioactive substance

Question # 16

Structure of the nucleus was explained by

Question # 17

A curie represents a very strong source of

Question # 18

γ-rays are

Question # 19

Rutherford performed an experiment on nuclear reactions in:

Question # 20

When a nucleus emits an alpha particles, its charge number decreases by

Question # 21

Pair production take place when energy ofγ-rays photon is

Question # 22

Which of the following material has longer half life

Question # 23

Rate of decay is actually described by.

Question # 24

Phenomenon of radioactivity is due to disintegration of

Question # 25

The half lie of radium-226 is

Question # 26

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

Question # 27

The chemical properties of an element depends upon the number of

Question # 28

For an atom having atomic number Z and atomic weight A, the number of electron in an atoms

Question # 29

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

Question # 30

Examples of moderators used in a fission reactor is/are:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Fraction of the decaying atoms per unit time is called
A. decay atom
B. decay element
C. decay constant
D. decay
2 A particle having the mass of electron and charge of a proton is called a
A. photon
B. position
C. antiproton
D. antineutrino
3 Nucleon means:
A. Only electrons
B. Only neutrons
C. Only protons
D. Both (A ) and (C)
4 Radiation detector are used to
A. measure intensity of radiation
B. measure energy of radiation
C. difference between different types of radiation
D. all the above
5 The most abundant isotope of neon is
A. neon-20
B. neon-21
C. neon-22
D. neon-23
6 A pair of quark and antiquark makes a:
A. Meson
B. Baryon
C. Proton
D. Neutron
7 1 amu is equal to
A. 1.66 x 10-24kg
B. 1.66 x 10-19kg
C. 1.66 x 10-34kg
D. 1.66 x 10-27kg
8 The chemical behaviour of an atom is determined by
A. binding energy
B. atomic number
C. mass number
D. number of isotopes
9 Curie is a unit of
A. reluctance
B. resistivity
C. binding energy
D. radioactivity
10 1 amu is equal to.
A. 1.66 x 10-24kg
B. 1.66 x 10-19kg
C. 1.66 x 10-24kg
D. 1.66 x 10-27kg

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