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

β-particles are easily deflected by collisions than heavy

Question # 2

The chemical properties of all the isotopes of an elements are

Question # 3

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

Question # 4

When thorium nucleus emits aβ-particle, the daughter nucleus is called:

Question # 5

Neutron was discovered by

Question # 6

Which of these is not a radiation detector

Question # 7

Phenomenon of radioactivity is due to disintegration of

Question # 8

For an atom having atomic number Z and atomic weight A, the charge on the nucleus is

Question # 9

In wilson cloud chamber, the air becomes saturated with:

Question # 10

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

Question # 11

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

Question # 12

Charge on neutron is

Question # 13

Different radioactive material have

Question # 14

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

Question # 15

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

Question # 16

1 amu is equal to

Question # 17

The range of particle depends upon the factor

Question # 18

Which of the following material has longer half life

Question # 19

Marie curie and Pierre curie discovered:

Question # 20

The half life of radioactive substances depends upon

Question # 21

γ-rays behave like a particle because they explain the

Question # 22

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

Question # 23

Gamma rays consist of steam of

Question # 24

The rate of decay of radioactive substance

Question # 25

When certain nucleus emits aβ-particles, is mass number:

Question # 26

A pair of quark and antiquark makes a:

Question # 27

Radioactivity was discovered by:

Question # 28

The number of all the protons and neutrons in a nucleus is known as

Question # 29

The most abundant isotope of neon is

Question # 30

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 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
2 Mass of neutron is
A. 1.67 x 10-31kg
B. 1.67 x 10-27kg
C. 9.1 x 10-31kg
D. 1.67 x 10-19kg
3 The unit of decay constant is
A. sex
B. sec2
C. sec-1
D. sec-2
4 The isotope/s of hydrogen is /are:
A. Protium
B. Deuterium
C. Tritium
D. Both (A) and (B)
5 1 amu is equal to.
A. 1.66 x 10-24kg
B. 1.66 x 10-19kg
C. 1.66 x 10-24kg
D. 1.66 x 10-27kg
6 Fraction of the decaying atoms per unit time is called
A. decay atom
B. decay element
C. decay constant
D. decay
7 The number of all the protons and neutrons in a nucleus is known as
A. atomic number
B. mass number
C. charge number
D. none of these
8 In his experiment on nuclear reactions, Rutherford bombardedα particles on:
A. Nitrogen
B. Hydrogen
C. Lead
D. Oxygen
9 Nucleus consists of
A. proton and neutron
B. protons and electron
C. electron and neutron
D. protons only
10 A mass spectrograph sort out
A. molecules
B. atoms
C. elements
D. isotopes

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