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

Different radioactive material have

Question # 2

Rate of decay is actually described by.

Question # 3

Proton was discovered by Rutherford in

Question # 4

Neutron was suggested to be in the nucleus by:

Question # 5

Marie curie and Pierre curie discovered:

Question # 6

Radioactivity

Question # 7

Neon gas have three isotopes whose atomic numbers are

Question # 8

Neutron was discovered by

Question # 9

Rutherford performed an experiment on nuclear reactions in:

Question # 10

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

Question # 11

Mass of proton is

Question # 12

An alpha particle has a charge of

Question # 13

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

Question # 14

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

Question # 15

When certain nucleus emits anα particle, its mass number:

Question # 16

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

Question # 17

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

Question # 18

β-particles are easily deflected by collisions than heavy

Question # 19

When radioactive nucleus emits aβ-particle, the proton-neutron ratio

Question # 20

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

Question # 21

γ-rays behave like a particle because they explain the

Question # 22

Gamma rays consist of steam of

Question # 23

Which are not the elementary particles?

Question # 24

A pair of quark and antiquark makes a:

Question # 25

Radioactivity was discovered by:

Question # 26

Neutron was discovered in

Question # 27

Nucleon means:

Question # 28

The chemical properties of an element depends upon the number of

Question # 29

The unit of decay constant is

Question # 30

Mass of proton is of order of

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The nuclei of an element having the same charge number but different mass numbers are called:
A. Isobars
B. Isotopes
C. Isomers
D. Isobaric
2 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
3 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
4 The energy is found from Einstein's mass energy relation is called
A. binding energy of electron
B. binding energy of proton
C. binding energy of neutron
D. binding energy of nucleus
5 Rutherford performed an experiment on nuclear reactions in:
A. 1718 A.D
B. 1818 A.D
C. 1918 A.D
D. 2001 A.D.
6 Gamma rays consist of steam of
A. electron
B. proton
C. photons
D. all of these
7 Radioactivity was discovered by
A. Rutherford
B. Henri Becqureal
C. Maxwell
D. James Chadwick
8 Three quarks make:
A. An electron
B. A meson
C. A baryon
D. A photon
9 The figure 1.007276μ shows the mass of an:
A. Atom
B. Positron
C. Electron
D. Neutron
10 Heavy water is made of one oxygen atom and two atoms of:
A. Protium
B. Deuterium
C. Tritium
D. Any of these

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