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

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

Question # 2

Radioactivity

Question # 3

Maric Curie and Pieree Curie discovered two new radioactive elements, which are called

Question # 4

γ-rays are

Question # 5

β-particles are easily deflected by collisions than heavy

Question # 6

Which of the following material has longer half life

Question # 7

Neutron was suggested to be in the nucleus by:

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

γ-rays behave like a particle because they explain the

Question # 12

Mass of proton is

Question # 13

For an atom having atomic number 'Z' and atomic weight 'A', the number of neutrons in the nucleous is

Question # 14

A curie represents a very strong source of

Question # 15

Binding energy per nucleus is

Question # 16

There is present in paraffin a large amount of:

Question # 17

If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by

Question # 18

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

Question # 19

The chemical properties of all the isotopes of an elements are

Question # 20

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

Question # 21

In wilson cloud chamber, the air becomes saturated with:

Question # 22

Radiation detector are used to

Question # 23

Which of these is not a radiation detector

Question # 24

The number if neutrons in the nucleus of 92U235are

Question # 25

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

Question # 26

In 1932 Chadwick discovered

Question # 27

Phenomenon of radioactivity is due to disintegration of

Question # 28

The time required for a radioactive material to decrease in active by one half is called

Question # 29

The half life of uranium-238 is

Question # 30

The missing mass which is converted to energy in the formation of nucleus, is called

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Radioactivity was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. All of them
2 The chemical properties of an element depends upon the number of
A. electron
B. position
C. photons
D. neutrons
3 In 1932 Chadwick discovered
A. proton
B. neutron
C. photon
D. electron
4 A particle having the mass of electron and charge of a proton is called a
A. photon
B. position
C. antiproton
D. antineutrino
5 Referring to the above figure, we can say that of all the elements, the most stable element is
A. Phosphours
B. Iron
C. uranium
D. Lithium
6 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
7 Which of the following material has smaller has life
A. uranium
B. polonium
C. radium
D. radian
8 U-238 present in the natural uranium is about:
A. 59%
B. 0.007%
C. 99%
D. 39%
9 For an atom having atomic number Z and atomic weight A, the number of electron in an atoms
A. A - Z
B. A + Z
C. Z
D. A
10 In wilson cloud chamber, the air becomes saturated with:
A. Alcohol vapours
B. Water
C. Helium gas
D. Nitrogen gas

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