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

Which are not the elementary particles?

Question # 2

Neutrons are

Question # 3

Neutron was disvovered by:

Question # 4

The chemical properties of all the isotopes of an elements are

Question # 5

Radium was discovered by:

Question # 6

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

Question # 7

A mass spectrograph sort out

Question # 8

The most abundant isotope of neon is

Question # 9

Charge on proton is

Question # 10

For Protium, the mass defect is:

Question # 11

Mass of proton is of order of

Question # 12

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

Question # 13

1 amu is equal to.

Question # 14

The diameter of an atom is of the order

Question # 15

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

Question # 16

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

Question # 17

β-particles are easily deflected by collisions than heavy

Question # 18

Rutherford performed an experiment on nuclear reactions in:

Question # 19

The isotope/s of hydrogen is /are:

Question # 20

Examples of moderators used in a fission reactor is/are:

Question # 21

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

Question # 22

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

Question # 23

γ-rays behave like a particle because they explain the

Question # 24

The figure 1.007276μ shows the mass of an:

Question # 25

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

Question # 26

The nucleus left after the emission of some radiation is called:

Question # 27

Phenomenon of radioactivity is due to disintegration of

Question # 28

The number if neutrons in the nucleus of 92U235are

Question # 29

The half life of uranium-238 is

Question # 30

The half lie of radium-226 is

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The reciprocal of decay constant λ of a radioactive material is:
A. Frequency
B. Half life
C. Year
D. Mean life
2 There is present in paraffin a large amount of:
A. Nitrogen
B. Hydrogen
C. Carbon
D. Baryllium
3 In 1932 Chadwick discovered
A. proton
B. neutron
C. photon
D. electron
4 Radioactivity
A. is exhibited more by semiconductors in general
B. in exhibited more by the element when they are coupled
C. with other radioactive elements by a covalent bond
D. is an atomic property of radioactive elements
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 The nucleus left after the emission of some radiation is called:
A. Parent nucleus
B. Daughter necleus
C. Mother necleus
D. Any of these
7 A curie represents a very strong source of
A. α-particle
B. β-particle
C. γ-particle
D. none of these
8 Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:
A. 50
B. 100
C. 150
D. 200
9 Radium was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. Rutherford
10 Pair production take place when energy ofγ-rays photon is
A. equal to 1.02 Mev-
B. greater than 1.02 Mev
C. less than 1.02 Mev
D. none of these

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