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

For Protium, the mass defect is:

Question # 2

Alfa particles are

Question # 3

Neutron was discovered by

Question # 4

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

Question # 5

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

Question # 6

The rate of decay of radioactive substance

Question # 7

A pair of quark and antiquark makes a:

Question # 8

A mass difference of 0.0012 u is equivalent to and energy of:

Question # 9

Which of these is not a radiation detector

Question # 10

During the nuclear changes, the law/s of conservation that hold/s are that of:

Question # 11

Nucleus of a hydrogen atom may contain:

Question # 12

Different radioactive material have

Question # 13

1 amu is equal to.

Question # 14

Mass of proton is of order of

Question # 15

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

Question # 16

The rate of decay of a radioactive substance

Question # 17

Nucleon means:

Question # 18

Fraction of the decaying atoms per unit time is called

Question # 19

When radioactive nucleus emits aβ-particle, the proton-neutron ratio

Question # 20

Radioactivity was discovered by

Question # 21

Mass of neutron is

Question # 22

The figure 1.007276μ shows the mass of an:

Question # 23

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

Question # 24

The counter, which also provides the power to the G.M. tube is called:

Question # 25

Phenomenon of radioactivity is due to disintegration of

Question # 26

Radioactivity

Question # 27

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

Question # 28

In wilson cloud chamber, the air becomes saturated with:

Question # 29

The chemical behaviour of an atom is determined by

Question # 30

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

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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 Phenomenon of radioactivity is due to disintegration of
A. nucleus
B. neutron
C. proton
D. molecule
3 The figure 1.007276μ shows the mass of an:
A. Atom
B. Positron
C. Electron
D. Neutron
4 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
5 Heavy water is made of one oxygen atom and two atoms of:
A. Protium
B. Deuterium
C. Tritium
D. Any of these
6 The most abundant isotope of neon is
A. neon-20
B. neon-21
C. neon-22
D. neon-23
7 The number of isotopes of hydrogen are
A. 2
B. 1
C. 3
D. 4
8 The number of protons inside a nucleus is called
A. mass number
B. atomic weight
C. atomic number
D. none of these
9 In radioactive decay, the new element which is formed due to the disintegration of original element is called
A. element
B. daughter element
C. parent element
D. none of these
10 Gamma rays consist of steam of
A. electron
B. proton
C. photons
D. all of these

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