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 figure 1.007276μ shows the mass of an:

Question # 2

A mass spectrograph sort out

Question # 3

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

Question # 4

When certain nucleus emits anα particle, its mass number:

Question # 5

Proton was discovered by Rutherford in

Question # 6

When certain nucleus emits aβ-particles, is mass number:

Question # 7

The total charge of any nucleus is given as

Question # 8

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

Question # 9

Which of the following material has smaller has life

Question # 10

The mass of the nucleus is always less than the total man of the protons and neutron that make up the nucleus. The difference of the two masses is called

Question # 11

Neutron was disvovered by:

Question # 12

According to Rutherford atomic model, the positive charge in an atom

Question # 13

How many isotopes of helium are present?

Question # 14

The rate of decay of a radioactive substance

Question # 15

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

Question # 16

Neutron was discovered by

Question # 17

Mass of proton is of order of

Question # 18

1 amu is equal to

Question # 19

An alpha particle has a charge of

Question # 20

A pair of quark and antiquark makes a:

Question # 21

U-238 present in the natural uranium is about:

Question # 22

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

Question # 23

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

Question # 24

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

Question # 25

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

Question # 26

γ-rays are

Question # 27

1 amu is equal to.

Question # 28

Radioactivity

Question # 29

Different radioactive material have

Question # 30

Which of the following material has longer half life

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 reciprocal of decay constant λ of a radioactive material is:
A. Frequency
B. Half life
C. Year
D. Mean life
2 Radioactivity
A. is exhibited more by semiconductors in general
B. in exhibited more by the element when they are coupled
C. with other radioactive elements by a covalent bond
D. is an atomic property of radioactive elements
3 Alfa particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
4 γ-rays are
A. electrostatic waves
B. electromagnetic waves
C. heavy particles
D. longitudinal waves
5 U-238 present in the natural uranium is about:
A. 59%
B. 0.007%
C. 99%
D. 39%
6 The half life of radioactive substances depends upon
A. amount of substance
B. energy of substance
C. state of substance
D. temperature of substance
7 Radioactivity is
A. self disruptive activity
B. spontaneous activity
C. exhibited by all elements under proper conditions
D. both 'a' and 'b'
8 Charge on proton is
A. 1.59 x 10-9C
B. 1.59 x 10-7C
C. -1.59 x 10-19 C
D. 1.59 x 10-19C
9 When a nucleus emits an alpha particle, it atomic mass decreased by
A. 2
B. 1
C. 4
D. 3
10 Examples of moderators used in a fission reactor is/are:
A. Water
B. Heavy water
C. Carbon
D. Hydrocarbon

Test Questions

Is this page helpful?