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

Structure of the nucleus was explained by

Question # 2

The unit of decay constant is

Question # 3

Proton was discovered by Rutherford in

Question # 4

Binding energy per nucleus is

Question # 5

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

Question # 6

The half life of radioactive substances depends upon

Question # 7

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

Question # 8

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

Question # 9

In radio-active decay, the original element which disintegrate to another element is called

Question # 10

Marie curie and Pierre curie discovered:

Question # 11

An alpha particle has a charge of

Question # 12

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

Question # 13

The diameter of an atom is of the order

Question # 14

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

Question # 15

Radioactivity was discovered by:

Question # 16

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

Question # 17

The figure 1.007276μ shows the mass of an:

Question # 18

When certain nucleus emits anα particle, its mass number:

Question # 19

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

Question # 20

The total charge of any nucleus is given as

Question # 21

The unit of decay constant is:

Question # 22

Phenomenon of radioactivity is due to disintegration of

Question # 23

For an atom having atomic number 'Z' and atomic weight 'A', the number of neutrons in the nucleous is

Question # 24

The chemical properties of an element depends upon the number of

Question # 25

Mass of proton is of order of

Question # 26

A mass difference of 0.0012 u is equivalent to and energy of:

Question # 27

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

Question # 28

Three quarks make:

Question # 29

Charge on neutron is

Question # 30

When a nucleus emits an alpha particles, its charge number decreases 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 The diameter of an atom is of the order
A. 10-125m
B. 10-11m
C. 10-10m
D. 10-9m
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 The nucleus/nuclei of hydrogen is/are:
A. Proton
B. Deuteron
C. Triton
D. All of these
4 Fraction of the decaying atoms per unit time is called
A. decay atom
B. decay element
C. decay constant
D. decay
5 Rate of decay is actually described by.
A. Half line
B. Decay constant
C. Mean life
D. Total life
6 The range ofβ-particle in air is greater than that ofα-particle by
A. 1000 times
B. 100 times
C. 15 times
D. 10 times
7 Hydrogen atom with only one proton in its nucleus, and one electron in its orbit is called
A. deuteron
B. deterium
C. protium
D. tritium
8 The unit of decay constant is
A. sex
B. sec2
C. sec-1
D. sec-2
9 A particle having the mass of electron and charge of a proton is called a
A. photon
B. position
C. antiproton
D. antineutrino
10 When a nucleus emits an alpha particles, its charge number decreases by
A. 3
B. 2
C. 6
D. 5

Test Questions

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!