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

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

Question # 2

Neutron was disvovered by:

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

Pair production take place when energy ofγ-rays photon is

Question # 7

Curie is a unit of

Question # 8

The half lie of radium-226 is

Question # 9

The chemical behaviour of an atom is determined by

Question # 10

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

Question # 11

Different radioactive material have

Question # 12

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

Question # 13

In his experiment on nuclear reactions, Rutherford bombardedα particles on:

Question # 14

The chemical properties of an element depends upon the number of

Question # 15

According to Rutherford atomic model, the positive charge in an atom

Question # 16

In 1932 Chadwick discovered

Question # 17

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

Question # 18

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

Question # 19

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

Question # 20

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

Question # 21

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

Question # 22

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

Question # 23

The nucleus/nuclei of hydrogen is/are:

Question # 24

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

Question # 25

Beta particles are

Question # 26

The nuclei of an element having the same charge number but different mass numbers are called:

Question # 27

Neutron was discovered in

Question # 28

Rutherford performed an experiment on nuclear reactions in:

Question # 29

Radioactivity was discovered by:

Question # 30

An alpha particle has a charge of

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Phenomenon of radioactivity is due to disintegration of
A. nucleus
B. neutron
C. proton
D. molecule
2 The penetration power ofβ-particle is
A. zero
B. less thanα-particle
C. equal toα-particle
D. greater thanα-particle
3 The isotope/s of hydrogen is /are:
A. Protium
B. Deuterium
C. Tritium
D. Both (A) and (B)
4 The total charge of any nucleus is given as
A. Ze2
B. Z2e
C. Z/e
D. Ze
5 The nucleus left after the emission of some radiation is called:
A. Parent nucleus
B. Daughter necleus
C. Mother necleus
D. Any of these
6 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
7 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
8 Rutherford performed an experiment on nuclear reactions in:
A. 1718 A.D
B. 1818 A.D
C. 1918 A.D
D. 2001 A.D.
9 When a charged particle passes through matter, it produces ionization, this effect is used in
A. fission reaction
B. reactor
C. radiation detector
D. fusion reaction
10 Radioactivity was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. All of them

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