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

Binding energy per nucleus is

Question # 2

Curie is a unit of

Question # 3

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

Question # 4

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

Question # 5

Charge on neutron is

Question # 6

Nucleus consists of

Question # 7

Electrons are

Question # 8

Neutron was suggested to be in the nucleus by:

Question # 9

Marie curie and Pierre curie discovered:

Question # 10

A pair of quark and antiquark makes a:

Question # 11

After alpha decay the atomic number of the atom

Question # 12

The chemical behaviour of an atom is determined by

Question # 13

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

Question # 14

For Protium, the mass defect is:

Question # 15

For an atom having atomic number Z and atomic weight A, the number of electron in an atoms

Question # 16

Three quarks make:

Question # 17

U-238 present in the natural uranium is about:

Question # 18

Radiation detector are used to

Question # 19

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

Question # 20

Neutron was discovered in

Question # 21

Rutherford performed an experiment on nuclear reactions in:

Question # 22

Which of these is not a radiation detector

Question # 23

The half life of radioactive substances depends upon

Question # 24

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

Question # 25

The nucleus/nuclei of hydrogen is/are:

Question # 26

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

Question # 27

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

Question # 28

Structure of the nucleus was explained by

Question # 29

Mass of proton is

Question # 30

Charge on proton is

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Mass of neutron is
A. 1.67 x 10-31kg
B. 1.67 x 10-27kg
C. 9.1 x 10-31kg
D. 1.67 x 10-19kg
2 Gamma rays consist of steam of
A. electron
B. proton
C. photons
D. all of these
3 The nuclei of an element having the same charge number but different mass numbers are called:
A. Isobars
B. Isotopes
C. Isomers
D. Isobaric
4 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
5 The unit of decay constant is:
A. Second
B. Metre
C. Hour
D. Year
6 Rutherford performed an experiment on nuclear reactions in:
A. 1718 A.D
B. 1818 A.D
C. 1918 A.D
D. 2001 A.D.
7 Three quarks make:
A. An electron
B. A meson
C. A baryon
D. A photon
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 The number if neutrons in the nucleus of 92U235are
A. Infinite
B. 92
C. 235
D. 143
10 Phenomenon of radioactivity is due to disintegration of
A. nucleus
B. neutron
C. proton
D. molecule

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