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

Phenomenon of radioactivity is due to disintegration of

Question # 2

Different radioactive material have

Question # 3

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

Question # 4

Which are not the elementary particles?

Question # 5

Pair production take place when energy ofγ-rays photon is

Question # 6

The diameter of an atom is of the order

Question # 7

When a nucleus emits an alpha particle, it atomic mass decreased by

Question # 8

Alfa particles are

Question # 9

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

Question # 10

The number of protons inside a nucleus is called

Question # 11

The total charge of any nucleus is given as

Question # 12

The most abundant isotope of neon is

Question # 13

In wilson cloud chamber, the air becomes saturated with:

Question # 14

When certain nucleus emits aβ-particles, is mass number:

Question # 15

Mass of proton is

Question # 16

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

Question # 17

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

Question # 18

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

Question # 19

Beta particles are

Question # 20

When certain nucleus emits anα particle, its mass number:

Question # 21

Which of these is not a radiation detector

Question # 22

Charge on neutron is

Question # 23

Which of the following material has smaller has life

Question # 24

The nucleus/nuclei of hydrogen is/are:

Question # 25

The penetration power ofβ-particle is

Question # 26

Rutherford performed an experiment on nuclear reactions in:

Question # 27

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

Question # 28

γ-rays behave like a particle because they explain the

Question # 29

Nucleon means:

Question # 30

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Proton was discovered by Rutherford in
A. 1915
B. 1906
C. 1910
D. 1920
2 If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by
A. -4
B. 4
C. 2
D. 1
3 When certain nucleus emits aβ-particles, is mass number:
A. Remain same
B. Increases by one
C. Decreases by one
D. Decreases by four
4 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
5 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
6 Neutrons are
A. positive charge
B. negatively charged
C. massless
D. neutral
7 The half lie of radium-226 is
A. 238 years
B. 4.5 x 109days
C. 1620 years
D. 332 years
8 Beta particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
9 The chemical properties of all the isotopes of an elements are
A. same
B. different
C. slightly different
D. none of these
10 Charge on neutron is
A. 1.6 x 10-19C
B. zero
C. -1.6 x 10-19C
D. 1.2 x 10-19C

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