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

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

Question # 2

Which of the following material has longer half life

Question # 3

Nucleon means:

Question # 4

Radioactivity was discovered by:

Question # 5

The chemical behaviour of an atom is determined by

Question # 6

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

Question # 7

Neon gas have three isotopes whose atomic numbers are

Question # 8

Rutherford performed an experiment on nuclear reactions in:

Question # 9

In his experiment on nuclear reactions, Rutherford bombardedα particles on:

Question # 10

The penetration power ofβ-particle is

Question # 11

Charge on proton is

Question # 12

Phenomenon of radioactivity is due to disintegration of

Question # 13

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

Question # 14

γ-rays are

Question # 15

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

Question # 16

How much time, theα-particle more massive than an electron

Question # 17

Radiation detector are used to

Question # 18

Neutron was suggested to be in the nucleus by:

Question # 19

The half lie of radium-226 is

Question # 20

In wilson cloud chamber, the air becomes saturated with:

Question # 21

Different radioactive material have

Question # 22

Mass of proton is

Question # 23

Which of the following material has smaller has life

Question # 24

Neutron was discovered in

Question # 25

Pair production take place when energy ofγ-rays photon is

Question # 26

The rate of decay of radioactive substance

Question # 27

For Protium, the mass defect is:

Question # 28

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

Question # 29

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

Question # 30

1 amu is equal to.

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Mass of proton is
A. 1.67 x 10-27kg
B. 1.67 x 10-31kg
C. 1.66 x 10-34kg
D. 1.67 x 10-17kg
2 The amount of energy equivalent to 1 a.m.u is
A. 9.315 Mev
B. 93.15 Mev
C. 931.5 Mev
D. 2.22 Mev
3 The unit of decay constant is:
A. Second
B. Metre
C. Hour
D. Year
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 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
6 Which are not the elementary particles?
A. Photons
B. Leptons
C. Hadrons
D. Quarks
7 Different radioactive material have
A. same half lives
B. different half lives
C. same mean lives
D. same total lives
8 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
9 How much time, theα-particle more massive than an electron
A. 600
B. 7000
C. 5000
D. 15000
10 Hydrogen atom with only one proton in its nucleus, and one electron in its orbit is called
A. deuteron
B. deterium
C. protium
D. tritium

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