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

Question # 2

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

Question # 3

The number if neutrons in the nucleus of 92U235are

Question # 4

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

Question # 5

Nucleus consists of

Question # 6

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

Question # 7

β-particles are easily deflected by collisions than heavy

Question # 8

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

Question # 9

An alpha particle has a charge of

Question # 10

For Protium, the mass defect is:

Question # 11

The chemical behaviour of an atom is determined by

Question # 12

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

Question # 13

Rate of decay is actually described by.

Question # 14

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

Question # 15

The number of protons inside a nucleus is called

Question # 16

Alfa , beta and gamma rays are emitted from a radio-active substance

Question # 17

If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by

Question # 18

1 amu is equal to.

Question # 19

The missing mass which is converted to energy in the formation of nucleus, is called

Question # 20

A mass spectrograph sort out

Question # 21

Neutron was disvovered by:

Question # 22

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

Question # 23

Alfa particles are

Question # 24

The half life of uranium-238 is

Question # 25

Curie is a unit of

Question # 26

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

Question # 27

Radioactivity is

Question # 28

The half life of radioactive substances depends upon

Question # 29

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

Question # 30

Charge on neutron is

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 Three quarks make:
A. An electron
B. A meson
C. A baryon
D. A photon
2 U-238 present in the natural uranium is about:
A. 59%
B. 0.007%
C. 99%
D. 39%
3 Rutherford performed an experiment on nuclear reactions in:
A. 1718 A.D
B. 1818 A.D
C. 1918 A.D
D. 2001 A.D.
4 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
5 The nuclei of an element having the same charge number but different mass numbers are called:
A. Isobars
B. Isotopes
C. Isomers
D. Isobaric
6 γ-rays are
A. electrostatic waves
B. electromagnetic waves
C. heavy particles
D. longitudinal waves
7 Binding energy per nucleus is
A. greater for heavy nucleus
B. least for heavy nucleus
C. greatest for light nuclei
D. decreases for medium weight niclei
8 The isotope/s of hydrogen is /are:
A. Protium
B. Deuterium
C. Tritium
D. Both (A) and (B)
9 When certain nucleus emits aβ-particles, is mass number:
A. Remain same
B. Increases by one
C. Decreases by one
D. Decreases by four
10 Structure of the nucleus was explained by
A. J.J Thomson
B. Bohr
C. Millikan
D. Rutherford

Test Questions

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!