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

00:00
Question # 1

A mass spectrograph sort out

Question # 2

Which of the following material has smaller has life

Question # 3

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

Question # 4

Binding energy per nucleus is

Question # 5

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

Question # 6

Radioactivity is

Question # 7

Nucleus consists of

Question # 8

Neutron was disvovered by:

Question # 9

For Protium, the mass defect is:

Question # 10

The diameter of an atom is of the order

Question # 11

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

Question # 12

A pair of quark and antiquark makes a:

Question # 13

Phenomenon of radioactivity is due to disintegration of

Question # 14

Mass of neutron is

Question # 15

When certain nucleus emits anα particle, its mass number:

Question # 16

Which are not the elementary particles?

Question # 17

The reciprocal of decay constant λ of a radioactive material is:

Question # 18

Nucleus of a hydrogen atom may contain:

Question # 19

The most abundant isotope of neon is

Question # 20

Structure of the nucleus was explained by

Question # 21

Curie is a unit of

Question # 22

Neutron was suggested to be in the nucleus by:

Question # 23

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

Question # 24

Alfa particles are

Question # 25

Marie curie and Pierre curie discovered:

Question # 26

The number of all the protons and neutrons in a nucleus is known as

Question # 27

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

Question # 28

The rate of decay of radioactive substance

Question # 29

The unit of decay constant is:

Question # 30

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 β-particles are easily deflected by collisions than heavy
A. α-particles
B. β-particles
C. γ-particles
D. none of these
2 The emission of radiations take place in elements, having charge number greater than
A. 109
B. 82
C. 69
D. 52
3 The diameter of an atom is of the order
A. 10-125m
B. 10-11m
C. 10-10m
D. 10-9m
4 Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:
A. 50
B. 100
C. 150
D. 200
5 The reciprocal of decay constant λ of a radioactive material is:
A. Frequency
B. Half life
C. Year
D. Mean life
6 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
7 Marie curie and Pierre curie discovered:
A. Uranium
B. Polonium
C. Radium
D. Both (A) and (C)
8 U-238 present in the natural uranium is about:
A. 59%
B. 0.007%
C. 99%
D. 39%
9 The unit of decay constant is:
A. Second
B. Metre
C. Hour
D. Year
10 A mass spectrograph sort out
A. molecules
B. atoms
C. elements
D. isotopes

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