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

  • Total Questions30

  • Time Allowed30

Start Test Download PDF

ECAT Pre General Science Physics Chapter 21 Nuclear Physics

00:00
Question # 1

Mass of neutron is

Question # 2

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

Question # 3

γ-rays behave like a particle because they explain the

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

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 # 8

Electrons are

Question # 9

Alfa particles are

Question # 10

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

Question # 11

Gamma rays consist of steam of

Question # 12

There is present in paraffin a large amount of:

Question # 13

Different radioactive material have

Question # 14

After alpha decay the atomic number of the atom

Question # 15

When certain nucleus emits anα particle, its mass number:

Question # 16

For Protium, the mass defect is:

Question # 17

The unit of decay constant is:

Question # 18

For an atom having atomic number Z and atomic weight A, the number of electron in an atoms

Question # 19

A mass spectrograph sort out

Question # 20

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

Question # 21

In wilson cloud chamber, the air becomes saturated with:

Question # 22

Nucleon means:

Question # 23

Rate of decay is actually described by.

Question # 24

The half life of uranium-238 is

Question # 25

Proton was discovered by Rutherford in

Question # 26

Three quarks make:

Question # 27

The chemical properties of all the isotopes of an elements are

Question # 28

In 1932 Chadwick discovered

Question # 29

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

Question # 30

The number if neutrons in the nucleus of 92U235are

Submit

Prepare Complete Set Wise ECAT Pre General Science Physics Chapter 21 Nuclear Physics MCQs Online With Answers


Topic Test

00:00
Submit

Top Scorers Of ECAT Pre General Science Physics Chapter 21 Nuclear Physics MCQ`s Test

  • L
    LAVANYA 31 - May - 2018 04 Min 45 Sec 110/120
  • U
    Ukasha Rana 29 - Apr - 2022 10 Min 50 Sec 100/120
  • G
    Gorak Danda 24 - Jun - 2024 08 Min 03 Sec 80/120
  • H
    haseeb 12 - Sep - 2021 07 Min 18 Sec 65/120
  • C
    Ch Iftihar 25 - Jan - 2022 07 Min 34 Sec 65/120
  • A
    Aleem Tahir 20 - Apr - 2021 10 Min 50 Sec 65/120
  • H
    Hamza Mukhtair 14 - Jul - 2022 06 Min 35 Sec 50/120
  • I
    ifrah Sheerazi 24 - Jun - 2021 10 Min 50 Sec 50/120
  • U
    umar 12 - Aug - 2021 10 Min 50 Sec 45/120
  • N
    Neha Khan 02 - Dec - 2021 10 Min 50 Sec 40/120
  • F
    Faisal Mehrban 22 - Jun - 2021 10 Min 50 Sec 40/120
  • S
    Sýèd Zàhàd 24 - Jun - 2022 10 Min 50 Sec 30/120
  • S
    Sami Saleem 23 - May - 2023 10 Min 50 Sec 25/120
  • F
    Faraz Ahmad 06 - May - 2021 10 Min 50 Sec 15/120
  • M
    Malik Farhan 23 - May - 2021 07 Min 32 Sec 10/120

ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 γ-rays are
A. electrostatic waves
B. electromagnetic waves
C. heavy particles
D. longitudinal waves
2 The rate of decay of a radioactive substance
A. decrease exponentially with time
B. decreases linearly with time
C. increases linearly with time
D. increases exponentially with time
3 Proton was discovered by Rutherford in
A. 1915
B. 1906
C. 1910
D. 1920
4 Rutherford performed an experiment on nuclear reactions in:
A. 1718 A.D
B. 1818 A.D
C. 1918 A.D
D. 2001 A.D.
5 In wilson cloud chamber, the air becomes saturated with:
A. Alcohol vapours
B. Water
C. Helium gas
D. Nitrogen gas
6 When certain nucleus emits aβ-particles, is mass number:
A. Remain same
B. Increases by one
C. Decreases by one
D. Decreases by four
7 Which of the following material has longer half life
A. radium
B. polonium
C. radium
D. uranium
8 A curie represents a very strong source of
A. α-particle
B. β-particle
C. γ-particle
D. none of these
9 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
10 Structure of the nucleus was explained by
A. J.J Thomson
B. Bohr
C. Millikan
D. Rutherford

Test Questions

Is this page helpful?

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!