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

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

Question # 2

The penetration power ofβ-particle is

Question # 3

The diameter of an atom is of the order

Question # 4

Beta particles are

Question # 5

The rate of decay of a radioactive substance

Question # 6

The number if neutrons in the nucleus of 92U235are

Question # 7

Curie is a unit of

Question # 8

The half life of radioactive substances depends upon

Question # 9

Mass of proton is of order of

Question # 10

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

Question # 11

A curie represents a very strong source of

Question # 12

Three quarks make:

Question # 13

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

Question # 14

Radioactivity

Question # 15

Which of the following material has smaller has life

Question # 16

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

Question # 17

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

Question # 18

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

Question # 19

The distance travelled byα-particle in a medium before coming to rest, is called

Question # 20

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

Question # 21

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

Question # 22

Phenomenon of radioactivity is due to disintegration of

Question # 23

Charge on proton is

Question # 24

The unit of decay constant is:

Question # 25

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

Question # 26

Radiation detector are used to

Question # 27

The number of protons inside a nucleus is called

Question # 28

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

Question # 29

Gamma rays consist of steam of

Question # 30

Radium was discovered by:

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 Structure of the nucleus was explained by
A. J.J Thomson
B. Bohr
C. Millikan
D. Rutherford
2 Fraction of the decaying atoms per unit time is called
A. decay atom
B. decay element
C. decay constant
D. decay
3 Three quarks make:
A. An electron
B. A meson
C. A baryon
D. A photon
4 Mass of proton is
A. 1.67 x 10-27kg
B. 1.67 x 10-31kg
C. 1.66 x 10-34kg
D. 1.67 x 10-17kg
5 The amount of energy equivalent to 1 a.m.u is
A. 9.315 Mev
B. 93.15 Mev
C. 931.5 Mev
D. 2.22 Mev
6 In wilson cloud chamber, the air becomes saturated with:
A. Alcohol vapours
B. Water
C. Helium gas
D. Nitrogen gas
7 Which of the following material has smaller has life
A. uranium
B. polonium
C. radium
D. radian
8 Neutron was discovered in
A. 1915
B. 1920
C. 1925
D. 1932
9 An alpha particle has a charge of
A. +2e
B. -2e
C. -e
D. +3e
10 The unit of decay constant is
A. sex
B. sec2
C. sec-1
D. sec-2

Test Questions

Is this page helpful?