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 nucleus/nuclei of hydrogen is/are:

Question # 2

The chemical behaviour of an atom is determined by

Question # 3

Which of the following material has longer half life

Question # 4

Electrons are

Question # 5

The number of isotopes of hydrogen are

Question # 6

For Protium, the mass defect is:

Question # 7

Which of these is not a radiation detector

Question # 8

The most abundant isotope of neon is

Question # 9

Neutrons are

Question # 10

When thorium nucleus emits aβ-particle, the daughter nucleus is called:

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

The chemical properties of all the isotopes of an elements are

Question # 15

Nucleus of a hydrogen atom may contain:

Question # 16

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

Question # 17

The half lie of radium-226 is

Question # 18

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

Question # 19

β-particles are easily deflected by collisions than heavy

Question # 20

The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains

Question # 21

The chemical properties of an element depends upon the number of

Question # 22

A mass spectrograph sort out

Question # 23

Mass of neutron is

Question # 24

Curie is a unit of

Question # 25

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

Question # 26

The range ofβ-particle in air is greater than that ofα-particle by

Question # 27

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

Question # 28

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

Question # 29

Binding energy per nucleus is

Question # 30

Mass of proton is of order of

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Referring to the above figure, we can say that of all the elements, the most stable element is
A. Phosphours
B. Iron
C. uranium
D. Lithium
2 The diameter of an atom is of the order
A. 10-125m
B. 10-11m
C. 10-10m
D. 10-9m
3 There is present in paraffin a large amount of:
A. Nitrogen
B. Hydrogen
C. Carbon
D. Baryllium
4 The distance travelled byα-particle in a medium before coming to rest, is called
A. range ofγ-particle
B. range of neutrons
C. range of particle
D. none of these
5 The amount of energy equivalent to 1 a.m.u is
A. 9.315 Mev
B. 93.15 Mev
C. 931.5 Mev
D. 2.22 Mev
6 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
7 Fraction of the decaying atoms per unit time is called
A. decay atom
B. decay element
C. decay constant
D. decay
8 Nucleon means:
A. Only electrons
B. Only neutrons
C. Only protons
D. Both (A ) and (C)
9 Which are not the elementary particles?
A. Photons
B. Leptons
C. Hadrons
D. Quarks
10 Heavy water is made of one oxygen atom and two atoms of:
A. Protium
B. Deuterium
C. Tritium
D. Any of these

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