ECAT Pre General Science Physics Chapter 21 MCQ Test With Answer for Physics chapter 21 (Nuclear Physics)

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ECAT General Science Physics Ch. 21 Test
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Online MCQ`s Test For Chapter 21 "ECAT Pre General Science Physics Chapter 21 Nuclear Physics Online Test"

Try The MCQ`s Test For Chapter 21 "ECAT Pre General Science Physics Chapter 21 Nuclear Physics Online Test"

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ECAT Pre General Science Physics Chapter 21 Nuclear Physics Online Test

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Question # 1

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

Question # 2

The mass of the nucleus is always less than the total man of the protons and neutron that make up the nucleus. The difference of the two masses is called

Question # 3

The number of protons inside a nucleus is called

Question # 4

Neutrons are

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

A pair of quark and antiquark makes a:

Question # 10

Radiation detector are used to

Question # 11

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

Question # 12

Nucleus consists of

Question # 13

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

Question # 14

Which of the following material has longer half life

Question # 15

Nuclei that have the same charge number but different mass number are called

Question # 16

The unit of decay constant is:

Question # 17

The figure 1.007276μ shows the mass of an:

Question # 18

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 # 19

Radioactivity is

Question # 20

γ-rays behave like a particle because they explain the

Question # 21

The isotope/s of hydrogen is /are:

Question # 22

Fraction of the decaying atoms per unit time is called

Question # 23

Gamma rays consist of steam of

Question # 24

Binding energy per nucleus is

Question # 25

Mass of proton is

Question # 26

Neutron was discovered in

Question # 27

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

Question # 28

Nucleon means:

Question # 29

The half life of radioactive substances depends upon

Question # 30

Nucleus of a hydrogen atom may contain:

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