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

Phenomenon of radioactivity is due to disintegration of

Question # 2

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

Question # 3

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

Question # 4

How many isotopes of helium are present?

Question # 5

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

Question # 6

Neutron was suggested to be in the nucleus by:

Question # 7

The diameter of an atom is of the order

Question # 8

The half life of radioactive substances depends upon

Question # 9

γ-rays behave like a particle because they explain the

Question # 10

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

Question # 11

Three quarks make:

Question # 12

The nucleus/nuclei of hydrogen is/are:

Question # 13

Structure of the nucleus was explained by

Question # 14

The range of particle depends upon the factor

Question # 15

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

Question # 16

Referring to the above figure, we can say that of all the elements, the most stable element is

Question # 17

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

Question # 18

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

Question # 19

The figure 1.007276μ shows the mass of an:

Question # 20

Rate of decay is actually described by.

Question # 21

The reciprocal of decay constant λ of a radioactive material is:

Question # 22

The half life of uranium-238 is

Question # 23

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

Question # 24

Neutron was disvovered by:

Question # 25

Maric Curie and Pieree Curie discovered two new radioactive elements, which are called

Question # 26

Mass of neutron is

Question # 27

Proton was discovered by Rutherford in

Question # 28

The rate of decay of a radioactive substance

Question # 29

The unit of decay constant is

Question # 30

1 amu is equal to.

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 The counter, which also provides the power to the G.M. tube is called:
A. Thin mica window
B. thin glass window
C. Airy window
D. Wooden window
3 Electrons are
A. positive charged
B. negatively charged
C. massless
D. neutral
4 Pair production take place when energy ofγ-rays photon is
A. equal to 1.02 Mev-
B. greater than 1.02 Mev
C. less than 1.02 Mev
D. none of these
5 Fraction of the decaying atoms per unit time is called
A. decay atom
B. decay element
C. decay constant
D. decay
6 The isotope/s of hydrogen is /are:
A. Protium
B. Deuterium
C. Tritium
D. Both (A) and (B)
7 Charge on neutron is
A. 1.6 x 10-19C
B. zero
C. -1.6 x 10-19C
D. 1.2 x 10-19C
8 Radioactivity was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. All of them
9 Marie curie and Pierre curie discovered:
A. Uranium
B. Polonium
C. Radium
D. Both (A) and (C)
10 When radioactive nucleus emits aβ-particle, the proton-neutron ratio
A. decrease
B. increase
C. same
D. none of these

Test Questions

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!