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

γ-rays are

Question # 2

1 amu is equal to.

Question # 3

The rate of decay of radioactive substance

Question # 4

Gamma rays consist of steam of

Question # 5

Which of these is not a radiation detector

Question # 6

The rate of decay of a radioactive substance

Question # 7

The half lie of radium-226 is

Question # 8

Which of the following material has smaller has life

Question # 9

In 1932 Chadwick discovered

Question # 10

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

Question # 11

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

Question # 12

Structure of the nucleus was explained by

Question # 13

Three quarks make:

Question # 14

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

Question # 15

The number of protons inside a nucleus is called

Question # 16

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

Question # 17

The unit of decay constant is:

Question # 18

Neutron was discovered by

Question # 19

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

Question # 20

Marie curie and Pierre curie discovered:

Question # 21

Neutron was suggested to be in the nucleus by:

Question # 22

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

Question # 23

Neutrons are

Question # 24

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

Question # 25

How many isotopes of helium are present?

Question # 26

U-238 present in the natural uranium is about:

Question # 27

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

Question # 28

A pair of quark and antiquark makes a:

Question # 29

Different radioactive material have

Question # 30

The range of particle depends upon the factor

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Rutherford performed an experiment on nuclear reactions in:
A. 1718 A.D
B. 1818 A.D
C. 1918 A.D
D. 2001 A.D.
2 The missing mass which is converted to energy in the formation of nucleus, is called
A. packing fraction
B. mass defect
C. binding energy
D. none of these
3 A mass spectrograph sort out
A. molecules
B. atoms
C. elements
D. isotopes
4 Curie is a unit of
A. reluctance
B. resistivity
C. binding energy
D. radioactivity
5 In 1932 Chadwick discovered
A. proton
B. neutron
C. photon
D. electron
6 The unit of decay constant is
A. sex
B. sec2
C. sec-1
D. sec-2
7 How many isotopes of helium are present?
A. 1
B. 2
C. 3
D. 4
8 Hydrogen atom with only one proton and one neutron in its nucleus, and one electron, is called
A. deuterium
B. protium
C. tritium
D. none of these
9 The energy acquired by a mass of 1g moving with the speed of light is
A. 3 x 108J
B. 9 x 1013J
C. 3 x 1013J
D. 9 x 1016J
10 The chemical behaviour of an atom is determined by
A. binding energy
B. atomic number
C. mass number
D. number of isotopes

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