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

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

Question # 2

The chemical properties of an element depends upon the number of

Question # 3

Pair production take place when energy ofγ-rays photon is

Question # 4

Which are not the elementary particles?

Question # 5

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

Question # 6

β-particles are easily deflected by collisions than heavy

Question # 7

Which of the following material has smaller has life

Question # 8

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

Question # 9

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

Question # 10

Radioactivity is

Question # 11

Alfa particles are

Question # 12

Beta particles are

Question # 13

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

Question # 14

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

Question # 15

Curie is a unit of

Question # 16

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

Question # 17

Radioactivity

Question # 18

Neon gas have three isotopes whose atomic numbers are

Question # 19

The rate of decay of a radioactive substance

Question # 20

The isotope/s of hydrogen is /are:

Question # 21

U-238 present in the natural uranium is about:

Question # 22

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

Question # 23

Nucleus consists of

Question # 24

After alpha decay the atomic number of the atom

Question # 25

The nucleus/nuclei of hydrogen is/are:

Question # 26

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

Question # 27

Neutron was discovered by

Question # 28

A pair of quark and antiquark makes a:

Question # 29

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

Question # 30

The half life of uranium-238 is

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
2 Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:
A. 50
B. 100
C. 150
D. 200
3 The diameter of an atom is of the order
A. 10-125m
B. 10-11m
C. 10-10m
D. 10-9m
4 In 1932 Chadwick discovered
A. proton
B. neutron
C. photon
D. electron
5 The rate of decay of radioactive substance
A. is constant
B. decrease exponentially with time
C. varies inversely as time
D. decreases linearly with time
6 How many isotopes of helium are present?
A. 1
B. 2
C. 3
D. 4
7 Proton was discovered by Rutherford in
A. 1915
B. 1906
C. 1910
D. 1920
8 The chemical properties of all the isotopes of an elements are
A. same
B. different
C. slightly different
D. none of these
9 Examples of moderators used in a fission reactor is/are:
A. Water
B. Heavy water
C. Carbon
D. Hydrocarbon
10 When a nucleus emits an alpha particles, its charge number decreases by
A. 3
B. 2
C. 6
D. 5

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