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

Neutron was suggested to be in the nucleus by:

Question # 2

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

Question # 3

Rutherford performed an experiment on nuclear reactions in:

Question # 4

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

Question # 5

The energy acquired by a mass of 1g moving with the speed of light is

Question # 6

The figure 1.007276μ shows the mass of an:

Question # 7

Three quarks make:

Question # 8

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

Question # 9

The nucleus/nuclei of hydrogen is/are:

Question # 10

Neutron was disvovered by:

Question # 11

The half lie of radium-226 is

Question # 12

γ-rays behave like a particle because they explain the

Question # 13

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

Question # 14

The number of isotopes of hydrogen are

Question # 15

The range of particle depends upon the factor

Question # 16

The unit of decay constant is:

Question # 17

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

Question # 18

1 amu is equal to

Question # 19

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

Question # 20

Neutrons are

Question # 21

Radioactivity was discovered by:

Question # 22

The chemical properties of an element depends upon the number of

Question # 23

The reciprocal of decay constant λ of a radioactive material is:

Question # 24

U-238 present in the natural uranium is about:

Question # 25

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

Question # 26

Mass of neutron is

Question # 27

In wilson cloud chamber, the air becomes saturated with:

Question # 28

A mass spectrograph sort out

Question # 29

Radioactivity

Question # 30

Proton was discovered by Rutherford in

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Marie curie and Pierre curie discovered:
A. Uranium
B. Polonium
C. Radium
D. Both (A) and (C)
2 In his experiment on nuclear reactions, Rutherford bombardedα particles on:
A. Nitrogen
B. Hydrogen
C. Lead
D. Oxygen
3 The mass of the nucleus is always less than the total man of the protons and neutron that make up the nucleus. The difference of the two masses is called
A. nuclear fission
B. nuclear fusion
C. man defect
D. radioactivity
4 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
5 A mass difference of 0.0012 u is equivalent to and energy of:
A. 0.5 Me V
B. 1.13 MeV
C. 5.13 MeV
D. 1.13 keV
6 Fraction of the decaying atoms per unit time is called
A. decay atom
B. decay element
C. decay constant
D. decay
7 Radiation detector are used to
A. measure intensity of radiation
B. measure energy of radiation
C. difference between different types of radiation
D. all the above
8 After alpha decay the atomic number of the atom
A. increase by four
B. decreases by two
C. increases by two
D. decrease by four
9 Beta particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
10 The number of isotopes of hydrogen are
A. 2
B. 1
C. 3
D. 4

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