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

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

Question # 3

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

Question # 4

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

Question # 5

The half lie of radium-226 is

Question # 6

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

Question # 7

The penetration power ofβ-particle is

Question # 8

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 # 9

The chemical behaviour of an atom is determined by

Question # 10

The rate of decay of a radioactive substance

Question # 11

Mass of proton is of order of

Question # 12

A mass spectrograph sort out

Question # 13

The figure 1.007276μ shows the mass of an:

Question # 14

Mass of neutron is

Question # 15

In his experiment on nuclear reactions, Rutherford bombardedα particles on:

Question # 16

Rutherford performed an experiment on nuclear reactions in:

Question # 17

The isotope/s of hydrogen is /are:

Question # 18

The range of particle depends upon the factor

Question # 19

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

Question # 20

The number if neutrons in the nucleus of 92U235are

Question # 21

Different radioactive material have

Question # 22

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

Question # 23

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

Question # 24

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

Question # 25

Neutron was suggested to be in the nucleus by:

Question # 26

Neutron was discovered in

Question # 27

The total charge of any nucleus is given as

Question # 28

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

Question # 29

Radiation detector are used to

Question # 30

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be
A. Equal to 1
B. Less than 1
C. Greater than 1
D. Infinity
2 Charge on proton is
A. 1.59 x 10-9C
B. 1.59 x 10-7C
C. -1.59 x 10-19 C
D. 1.59 x 10-19C
3 Maric Curie and Pieree Curie discovered two new radioactive elements, which are called
A. polonium uranium
B. uranium and radium
C. polonium and radium
D. none of these
4 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
5 The number of protons inside a nucleus is called
A. mass number
B. atomic weight
C. atomic number
D. none of these
6 A mass spectrograph sort out
A. molecules
B. atoms
C. elements
D. isotopes
7 Nucleon means:
A. Only electrons
B. Only neutrons
C. Only protons
D. Both (A ) and (C)
8 The range of particle depends upon the factor
A. charge, mass and energy of particle
B. density of medium
C. ionization potential of the atoms
D. all the above
9 Radioactivity was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. All of them
10 Fraction of the decaying atoms per unit time is called
A. decay atom
B. decay element
C. decay constant
D. decay

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