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

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

Question # 2

The energy acquired by a mass of 1g moving with the speed of light is

Question # 3

Neutron was suggested to be in the nucleus by:

Question # 4

Electrons are

Question # 5

The diameter of an atom is of the order

Question # 6

Structure of the nucleus was explained by

Question # 7

The nucleus/nuclei of hydrogen is/are:

Question # 8

Alfa particles are

Question # 9

Gamma rays consist of steam of

Question # 10

Radioactivity

Question # 11

Which of the following material has longer half life

Question # 12

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

Question # 13

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

Question # 14

Nucleus consists of

Question # 15

The mass of the nucleus is always less than the total man of the protons and neutron that make up the nucleus. The difference of the two masses is called

Question # 16

The emission of radiations take place in elements, having charge number greater than

Question # 17

Heavy water is made of one oxygen atom and two atoms of:

Question # 18

The number of isotopes of hydrogen are

Question # 19

Radiation detector are used to

Question # 20

The most abundant isotope of neon is

Question # 21

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

Question # 22

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

Question # 23

Referring to the above figure, we can say that of all the elements, the most stable element is

Question # 24

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

Question # 25

The rate of decay of a radioactive substance

Question # 26

Neutron was discovered in

Question # 27

Neutron was discovered by

Question # 28

A mass spectrograph sort out

Question # 29

Mass of proton is of order of

Question # 30

γ-rays behave like a particle because they explain the

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Electrons are
A. positive charged
B. negatively charged
C. massless
D. neutral
2 Proton was discovered by Rutherford in
A. 1915
B. 1906
C. 1910
D. 1920
3 Which are not the elementary particles?
A. Photons
B. Leptons
C. Hadrons
D. Quarks
4 A mass difference of 0.0012 u is equivalent to and energy of:
A. 0.5 Me V
B. 1.13 MeV
C. 5.13 MeV
D. 1.13 keV
5 The reciprocal of decay constant λ of a radioactive material is:
A. Frequency
B. Half life
C. Year
D. Mean life
6 The diameter of an atom is of the order
A. 10-125m
B. 10-11m
C. 10-10m
D. 10-9m
7 The chemical properties of all the isotopes of an elements are
A. same
B. different
C. slightly different
D. none of these
8 Neutron was discovered by
A. Curie
B. Roentgen
C. Chadwick
D. Rutherford
9 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
10 The number of isotopes of hydrogen are
A. 2
B. 1
C. 3
D. 4

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