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

The energy is found from Einstein's mass energy relation is called

Question # 2

In radioactive decay, the new element which is formed due to the disintegration of original element is called

Question # 3

The most abundant isotope of neon is

Question # 4

Rate of decay is actually described by.

Question # 5

The nucleus left after the emission of some radiation is called:

Question # 6

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

Question # 7

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

Question # 8

Which of the following material has smaller has life

Question # 9

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

Question # 10

Three quarks make:

Question # 11

A curie represents a very strong source of

Question # 12

Gamma rays consist of steam of

Question # 13

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

Question # 14

The time required for a radioactive material to decrease in active by one half is called

Question # 15

Radioactivity is

Question # 16

Which are not the elementary particles?

Question # 17

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

Question # 18

Radioactivity was discovered by

Question # 19

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

Question # 20

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

Question # 21

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

Question # 22

When a charged particle passes through matter, it produces ionization, this effect is used in

Question # 23

The rate of decay of radioactive substance

Question # 24

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

Question # 25

The unit of decay constant is

Question # 26

Maric Curie and Pieree Curie discovered two new radioactive elements, which are called

Question # 27

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

Question # 28

The isotope/s of hydrogen is /are:

Question # 29

Neutron was discovered in

Question # 30

The number if neutrons in the nucleus of 92U235are

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:
A. 50
B. 100
C. 150
D. 200
2 The time required for a radioactive material to decrease in active by one half is called
A. half time
B. half life
C. disintegration time
D. mean life
3 The range ofβ-particle in air is greater than that ofα-particle by
A. 1000 times
B. 100 times
C. 15 times
D. 10 times
4 The nucleus/nuclei of hydrogen is/are:
A. Proton
B. Deuteron
C. Triton
D. All of these
5 Three quarks make:
A. An electron
B. A meson
C. A baryon
D. A photon
6 An alpha particle has a charge of
A. +2e
B. -2e
C. -e
D. +3e
7 1 amu is equal to
A. 1.66 x 10-24kg
B. 1.66 x 10-19kg
C. 1.66 x 10-34kg
D. 1.66 x 10-27kg
8 The most abundant isotope of neon is
A. neon-20
B. neon-21
C. neon-22
D. neon-23
9 Hydrogen atom with only one proton in its nucleus, and one electron in its orbit is called
A. deuteron
B. deterium
C. protium
D. tritium
10 A pair of quark and antiquark makes a:
A. Meson
B. Baryon
C. Proton
D. Neutron

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