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

Nucleon means:

Question # 2

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

Question # 3

Neutron was disvovered by:

Question # 4

After alpha decay the atomic number of the atom

Question # 5

The number of protons inside a nucleus is called

Question # 6

Which of the following material has longer half life

Question # 7

The rate of decay of radioactive substance

Question # 8

Neon gas have three isotopes whose atomic numbers are

Question # 9

The chemical properties of all the isotopes of an elements are

Question # 10

Binding energy per nucleus is

Question # 11

Radioactivity was discovered by:

Question # 12

Which are not the elementary particles?

Question # 13

Mass of proton is of order of

Question # 14

Charge on proton is

Question # 15

Three quarks make:

Question # 16

U-238 present in the natural uranium is about:

Question # 17

A curie represents a very strong source of

Question # 18

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

Question # 19

The total charge of any nucleus is given as

Question # 20

Structure of the nucleus was explained by

Question # 21

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

Question # 22

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

Question # 23

The chemical behaviour of an atom is determined by

Question # 24

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

Question # 25

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

Question # 26

Gamma rays consist of steam of

Question # 27

Different radioactive material have

Question # 28

γ-rays are

Question # 29

How many isotopes of helium are present?

Question # 30

Proton was discovered by Rutherford in

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 A mass difference of 0.0012 u is equivalent to and energy of:
A. 0.5 Me V
B. 1.13 MeV
C. 5.13 MeV
D. 1.13 keV
2 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
3 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
4 How much time, theα-particle more massive than an electron
A. 600
B. 7000
C. 5000
D. 15000
5 The range of particle depends upon the factor
A. charge, mass and energy of particle
B. density of medium
C. ionization potential of the atoms
D. all the above
6 Marie curie and Pierre curie discovered:
A. Uranium
B. Polonium
C. Radium
D. Both (A) and (C)
7 Which are not the elementary particles?
A. Photons
B. Leptons
C. Hadrons
D. Quarks
8 When certain nucleus emits aβ-particles, is mass number:
A. Remain same
B. Increases by one
C. Decreases by one
D. Decreases by four
9 Neon gas have three isotopes whose atomic numbers are
A. 20, 24 , 23
B. 20, 21 , 22
C. 20, 19 , 21
D. none of these
10 β-particles are easily deflected by collisions than heavy
A. α-particles
B. β-particles
C. γ-particles
D. none of these

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