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

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Question # 1

Which of the following material has longer half life

Question # 2

If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be

Question # 3

The number of all the protons and neutrons in a nucleus is known as

Question # 4

In 1932 Chadwick discovered

Question # 5

Gamma rays consist of steam of

Question # 6

1 amu is equal to.

Question # 7

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

Question # 8

In radioactive decay, the new element which is formed due to the disintegration of original element is called

Question # 9

Radioactivity was discovered by:

Question # 10

The number of protons inside a nucleus is called

Question # 11

The chemical properties of an element depends upon the number of

Question # 12

Proton was discovered by Rutherford in

Question # 13

The number if neutrons in the nucleus of 92U235are

Question # 14

The chemical properties of all the isotopes of an elements are

Question # 15

Neutron was disvovered by:

Question # 16

Neutron was discovered by

Question # 17

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

Question # 18

Neon gas have three isotopes whose atomic numbers are

Question # 19

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

Question # 20

In radio-active decay, the original element which disintegrate to another element is called

Question # 21

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

Question # 22

γ-rays are

Question # 23

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

Question # 24

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

Question # 25

Mass of neutron is

Question # 26

Nucleon means:

Question # 27

Mass of proton is

Question # 28

When certain nucleus emits anα particle, its mass number:

Question # 29

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

Question # 30

Alfa , beta and gamma rays are emitted from a radio-active substance

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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 The energy acquired by a mass of 1g moving with the speed of light is
A. 3 x 108J
B. 9 x 1013J
C. 3 x 1013J
D. 9 x 1016J
3 When certain nucleus emits anα particle, its mass number:
A. Increases by one
B. Decreases by one
C. Remain same
D. Decreases by four
4 When certain nucleus emits aβ-particles, is mass number:
A. Remain same
B. Increases by one
C. Decreases by one
D. Decreases by four
5 Radioactivity
A. is exhibited more by semiconductors in general
B. in exhibited more by the element when they are coupled
C. with other radioactive elements by a covalent bond
D. is an atomic property of radioactive elements
6 The unit of decay constant is:
A. Second
B. Metre
C. Hour
D. Year
7 Heavy water is made of one oxygen atom and two atoms of:
A. Protium
B. Deuterium
C. Tritium
D. Any of these
8 Charge on proton is
A. 1.59 x 10-9C
B. 1.59 x 10-7C
C. -1.59 x 10-19 C
D. 1.59 x 10-19C
9 γ-rays are
A. electrostatic waves
B. electromagnetic waves
C. heavy particles
D. longitudinal waves
10 A mass spectrograph sort out
A. molecules
B. atoms
C. elements
D. isotopes

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