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

Which of the following material has longer half life

Question # 2

The penetration power ofβ-particle is

Question # 3

Mass of proton is

Question # 4

β-particles are easily deflected by collisions than heavy

Question # 5

Mass of neutron is

Question # 6

Electrons are

Question # 7

Charge on proton is

Question # 8

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

Question # 9

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

Question # 10

The unit of decay constant is:

Question # 11

The number of isotopes of hydrogen are

Question # 12

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 # 13

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

Question # 14

The rate of decay of a radioactive substance

Question # 15

The number of protons inside a nucleus is called

Question # 16

There is present in paraffin a large amount of:

Question # 17

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

Question # 18

Curie is a unit of

Question # 19

Three quarks make:

Question # 20

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

Question # 21

After alpha decay the atomic number of the atom

Question # 22

How many isotopes of helium are present?

Question # 23

Structure of the nucleus was explained by

Question # 24

U-238 present in the natural uranium is about:

Question # 25

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

Question # 26

The half life of radioactive substances depends upon

Question # 27

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

Question # 28

Charge on neutron is

Question # 29

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

Question # 30

For an atom having atomic number Z and atomic weight A, the charge on the nucleus 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 When certain nucleus emits aβ-particles, is mass number:
A. Remain same
B. Increases by one
C. Decreases by one
D. Decreases by four
2 A mass spectrograph sort out
A. molecules
B. atoms
C. elements
D. isotopes
3 A pair of quark and antiquark makes a:
A. Meson
B. Baryon
C. Proton
D. Neutron
4 Which of the following material has smaller has life
A. uranium
B. polonium
C. radium
D. radian
5 Marie curie and Pierre curie discovered:
A. Uranium
B. Polonium
C. Radium
D. Both (A) and (C)
6 The rate of decay of radioactive substance
A. is constant
B. decrease exponentially with time
C. varies inversely as time
D. decreases linearly with time
7 Fraction of the decaying atoms per unit time is called
A. decay atom
B. decay element
C. decay constant
D. decay
8 Neutrons are
A. positive charge
B. negatively charged
C. massless
D. neutral
9 Proton was discovered by Rutherford in
A. 1915
B. 1906
C. 1910
D. 1920
10 In radio-active decay, the original element which disintegrate to another element is called
A. element
B. daughter element
C. parent element
D. none of these

Test Questions

Is this page helpful?

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!