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

When a charged particle passes through matter, it produces ionization, this effect is used in

Question # 2

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

Question # 3

Mass of proton is

Question # 4

Neutron was discovered in

Question # 5

The chemical properties of all the isotopes of an elements are

Question # 6

1 amu is equal to.

Question # 7

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

Question # 8

Fraction of the decaying atoms per unit time is called

Question # 9

If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be

Question # 10

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

Question # 11

Which of the following material has longer half life

Question # 12

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

Question # 13

Nucleus consists of

Question # 14

Proton was discovered by Rutherford in

Question # 15

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

Question # 16

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

Question # 17

A mass difference of 0.0012 u is equivalent to and energy of:

Question # 18

Referring to the above figure, we can say that of all the elements, the most stable element is

Question # 19

Neon gas have three isotopes whose atomic numbers are

Question # 20

The nuclei of an element having the same charge number but different mass numbers are called:

Question # 21

γ-rays behave like a particle because they explain the

Question # 22

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

Question # 23

In 1932 Chadwick discovered

Question # 24

Gamma rays consist of steam of

Question # 25

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

Question # 26

The half life of uranium-238 is

Question # 27

A particle having the mass of electron and charge of a proton is called a

Question # 28

The unit of decay constant is

Question # 29

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

Question # 30

Rutherford performed an experiment on nuclear reactions in:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 γ-rays behave like a particle because they explain the
A. Compton effect
B. Photoelectric effect
C. Pair-production
D. all the above
2 When a nucleus emits an alpha particles, its charge number decreases by
A. 3
B. 2
C. 6
D. 5
3 The total charge of any nucleus is given as
A. Ze2
B. Z2e
C. Z/e
D. Ze
4 According to Rutherford atomic model, the positive charge in an atom
A. is concentrated at its centre
B. is in the form of positive electron at same distance from its centre
C. is spread uniformly through its volume
D. none of these
5 Neutron was suggested to be in the nucleus by:
A. Rutherford in 1920
B. Bohar in 1913
C. Dirac in 1928
D. Anderson in 1932
6 Neutrons are
A. positive charge
B. negatively charged
C. massless
D. neutral
7 The counter, which also provides the power to the G.M. tube is called:
A. Thin mica window
B. thin glass window
C. Airy window
D. Wooden window
8 Beta particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
9 In radioactive decay, the new element which is formed due to the disintegration of original element is called
A. element
B. daughter element
C. parent element
D. none of these
10 When a nucleus emits an alpha particle, it atomic mass decreased by
A. 2
B. 1
C. 4
D. 3

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