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

Question # 2

The number if neutrons in the nucleus of 92U235are

Question # 3

The unit of decay constant is:

Question # 4

The number of isotopes of hydrogen are

Question # 5

Which of the following material has smaller has life

Question # 6

The half lie of radium-226 is

Question # 7

U-238 present in the natural uranium is about:

Question # 8

The chemical properties of an element depends upon the number of

Question # 9

The half life of radioactive substances depends upon

Question # 10

The rate of decay of radioactive substance

Question # 11

The time required for a radioactive material to decrease in active by one half is called

Question # 12

Radioactivity was discovered by:

Question # 13

Neutron was suggested to be in the nucleus by:

Question # 14

Mass of neutron is

Question # 15

Proton was discovered by Rutherford in

Question # 16

Gamma rays consist of steam of

Question # 17

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

Question # 18

The chemical properties of all the isotopes of an elements are

Question # 19

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

Question # 20

Fraction of the decaying atoms per unit time is called

Question # 21

A pair of quark and antiquark makes a:

Question # 22

Alfa particles are

Question # 23

Heavy water is made of one oxygen atom and two atoms of:

Question # 24

The figure 1.007276μ shows the mass of an:

Question # 25

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

Question # 26

During the nuclear changes, the law/s of conservation that hold/s are that of:

Question # 27

The diameter of an atom is of the order

Question # 28

Neutron was discovered by

Question # 29

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

Question # 30

In radioactive decay, the new element which is formed due to the disintegration of original element is called

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 Neutron was discovered in
A. 1915
B. 1920
C. 1925
D. 1932
2 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
3 Nuclei that have the same charge number but different mass number are called
A. isotones
B. isomers
C. isotopes
D. isobars
4 The half lie of radium-226 is
A. 238 years
B. 4.5 x 109days
C. 1620 years
D. 332 years
5 Mass of proton is of order of
A. 10-31gm
B. 10-27kg
C. 10-24gm
D. 10+27kg
6 Hydrogen atom with only one proton and one neutron in its nucleus, and one electron, is called
A. deuterium
B. protium
C. tritium
D. none of these
7 Radioactivity was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. All of them
8 The distance travelled byα-particle in a medium before coming to rest, is called
A. range ofγ-particle
B. range of neutrons
C. range of particle
D. none of these
9 β-particles are easily deflected by collisions than heavy
A. α-particles
B. β-particles
C. γ-particles
D. none of these
10 The reciprocal of decay constant λ of a radioactive material is:
A. Frequency
B. Half life
C. Year
D. Mean life

Test Questions

Is this page helpful?

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!