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

Rutherford performed an experiment on nuclear reactions in:

Question # 2

The total charge of any nucleus is given as

Question # 3

The rate of decay of radioactive substance

Question # 4

Charge on proton is

Question # 5

Radioactivity

Question # 6

The penetration power ofβ-particle is

Question # 7

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

Question # 8

The energy is found from Einstein's mass energy relation is called

Question # 9

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

Question # 10

Neutron was discovered by

Question # 11

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

Question # 12

The number if neutrons in the nucleus of 92U235are

Question # 13

The most abundant isotope of neon is

Question # 14

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

Question # 15

Radioactivity was discovered by:

Question # 16

Different radioactive material have

Question # 17

Nucleus consists of

Question # 18

The chemical properties of an element depends upon the number of

Question # 19

There is present in paraffin a large amount of:

Question # 20

The unit of decay constant is

Question # 21

A mass spectrograph sort out

Question # 22

The range of particle depends upon the factor

Question # 23

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

Question # 24

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

Question # 25

The chemical properties of all the isotopes of an elements are

Question # 26

In 1932 Chadwick discovered

Question # 27

The unit of decay constant is:

Question # 28

Charge on neutron is

Question # 29

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

Question # 30

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The number if neutrons in the nucleus of 92U235are
A. Infinite
B. 92
C. 235
D. 143
2 The chemical properties of all the isotopes of an elements are
A. same
B. different
C. slightly different
D. none of these
3 Which of the following material has smaller has life
A. uranium
B. polonium
C. radium
D. radian
4 Radioactivity is
A. self disruptive activity
B. spontaneous activity
C. exhibited by all elements under proper conditions
D. both 'a' and 'b'
5 Radioactivity was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. All of them
6 The nuclei of an element having the same charge number but different mass numbers are called:
A. Isobars
B. Isotopes
C. Isomers
D. Isobaric
7 When a nucleus emits an alpha particles, its charge number decreases by
A. 3
B. 2
C. 6
D. 5
8 Which of the following material has longer half life
A. radium
B. polonium
C. radium
D. uranium
9 Proton was discovered by Rutherford in
A. 1915
B. 1906
C. 1910
D. 1920
10 When certain nucleus emits aβ-particles, is mass number:
A. Remain same
B. Increases by one
C. Decreases by one
D. Decreases by four

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