ECAT Pre General Science Physics Chapter 21 MCQ Test With Answer

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

Which of the following material has longer half life

Question # 2

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

Question # 3

Gamma rays consist of steam of

Question # 4

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

Question # 5

Curie is a unit of

Question # 6

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

Question # 7

Mass of neutron is

Question # 8

Rate of decay is actually described by.

Question # 9

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

Question # 10

The chemical properties of an element depends upon the number of

Question # 11

The nuclei of an element having the same charge number but different mass numbers are called:

Question # 12

Charge on proton is

Question # 13

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

Question # 14

The number if neutrons in the nucleus of 92U235are

Question # 15

The chemical behaviour of an atom is determined by

Question # 16

The reciprocal of decay constant λ of a radioactive material is:

Question # 17

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

Question # 18

Neutron was discovered by

Question # 19

The number of protons inside a nucleus is called

Question # 20

Radioactivity is

Question # 21

Radioactivity was discovered by

Question # 22

The unit of decay constant is

Question # 23

An alpha particle has a charge of

Question # 24

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

Question # 25

Mass of proton is of order of

Question # 26

After alpha decay the atomic number of the atom

Question # 27

When certain nucleus emits anα particle, its mass number:

Question # 28

Nucleus of a hydrogen atom may contain:

Question # 29

Radioactivity was discovered by:

Question # 30

The unit of decay constant is:

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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 A particle having the mass of electron and charge of a proton is called a
A. photon
B. position
C. antiproton
D. antineutrino
3 The unit of decay constant is
A. sex
B. sec2
C. sec-1
D. sec-2
4 In radio-active decay, the original element which disintegrate to another element is called
A. element
B. daughter element
C. parent element
D. none of these
5 Marie curie and Pierre curie discovered:
A. Uranium
B. Polonium
C. Radium
D. Both (A) and (C)
6 Examples of moderators used in a fission reactor is/are:
A. Water
B. Heavy water
C. Carbon
D. Hydrocarbon
7 How many isotopes of helium are present?
A. 1
B. 2
C. 3
D. 4
8 Phenomenon of radioactivity is due to disintegration of
A. nucleus
B. neutron
C. proton
D. molecule
9 When certain nucleus emits anα particle, its mass number:
A. Increases by one
B. Decreases by one
C. Remain same
D. Decreases by four
10 The counter, which also provides the power to the G.M. tube is called:
A. Thin mica window
B. thin glass window
C. Airy window
D. Wooden window

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