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

Nucleon means:

Question # 2

Different radioactive material have

Question # 3

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

Question # 4

The diameter of an atom is of the order

Question # 5

A pair of quark and antiquark makes a:

Question # 6

The half life of uranium-238 is

Question # 7

1 amu is equal to.

Question # 8

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

Question # 9

The range of particle depends upon the factor

Question # 10

Mass of proton is of order of

Question # 11

When radioactive nucleus emits aβ-particle, the proton-neutron ratio

Question # 12

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

Question # 13

There is present in paraffin a large amount of:

Question # 14

Gamma rays consist of steam of

Question # 15

The penetration power ofβ-particle is

Question # 16

Which are not the elementary particles?

Question # 17

Neutron was discovered by

Question # 18

Radioactivity was discovered by:

Question # 19

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

Question # 20

During the nuclear changes, the law/s of conservation that hold/s are that of:

Question # 21

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

Question # 22

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

Question # 23

Radioactivity

Question # 24

The figure 1.007276μ shows the mass of an:

Question # 25

For an atom having atomic number Z and atomic weight A, the number of electron in an atoms

Question # 26

A curie represents a very strong source of

Question # 27

Radium was discovered by:

Question # 28

Neutron was discovered in

Question # 29

Which of the following material has longer half life

Question # 30

The chemical properties of an element depends upon the number of

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Which of the following material has longer half life
A. radium
B. polonium
C. radium
D. uranium
2 Nuclei that have the same charge number but different mass number are called
A. isotones
B. isomers
C. isotopes
D. isobars
3 Hydrogen atom with only one proton and one neutron in its nucleus, and one electron, is called
A. deuterium
B. protium
C. tritium
D. none of these
4 The number if neutrons in the nucleus of 92U235are
A. Infinite
B. 92
C. 235
D. 143
5 During the nuclear changes, the law/s of conservation that hold/s are that of:
A. Charge
B. energy
C. Momentum
D. Mass
6 A mass spectrograph sort out
A. molecules
B. atoms
C. elements
D. isotopes
7 There is present in paraffin a large amount of:
A. Nitrogen
B. Hydrogen
C. Carbon
D. Baryllium
8 The unit of decay constant is:
A. Second
B. Metre
C. Hour
D. Year
9 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
10 Which of the following material has smaller has life
A. uranium
B. polonium
C. radium
D. radian

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