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

A pair of quark and antiquark makes a:

Question # 2

Which of the following material has smaller has life

Question # 3

Radiation detector are used to

Question # 4

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

Question # 5

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

Question # 6

The number of isotopes of hydrogen are

Question # 7

Neutron was discovered by

Question # 8

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

Question # 9

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

Question # 10

An alpha particle has a charge of

Question # 11

The penetration power ofβ-particle is

Question # 12

Radioactivity

Question # 13

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

Question # 14

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

Question # 15

The missing mass which is converted to energy in the formation of nucleus, is called

Question # 16

Radioactivity was discovered by:

Question # 17

Rate of decay is actually described by.

Question # 18

The isotope/s of hydrogen is /are:

Question # 19

Rutherford performed an experiment on nuclear reactions in:

Question # 20

After alpha decay the atomic number of the atom

Question # 21

If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be

Question # 22

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

Question # 23

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

Question # 24

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

Question # 25

Different radioactive material have

Question # 26

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

Question # 27

Marie curie and Pierre curie discovered:

Question # 28

β-particles are easily deflected by collisions than heavy

Question # 29

Curie is a unit of

Question # 30

A curie represents a very strong source of

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 A curie represents a very strong source of
A. α-particle
B. β-particle
C. γ-particle
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 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
4 The isotope/s of hydrogen is /are:
A. Protium
B. Deuterium
C. Tritium
D. Both (A) and (B)
5 Rutherford performed an experiment on nuclear reactions in:
A. 1718 A.D
B. 1818 A.D
C. 1918 A.D
D. 2001 A.D.
6 According to Rutherford atomic model, the positive charge in an atom
A. is concentrated at its centre
B. is in the form of positive electron at same distance from its centre
C. is spread uniformly through its volume
D. none of these
7 Electrons are
A. positive charged
B. negatively charged
C. massless
D. neutral
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 The half life of radioactive substances depends upon
A. amount of substance
B. energy of substance
C. state of substance
D. temperature of substance
10 When certain nucleus emits anα particle, its mass number:
A. Increases by one
B. Decreases by one
C. Remain same
D. Decreases by four

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