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

A curie represents a very strong source of

Question # 2

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

Question # 3

The isotope/s of hydrogen is /are:

Question # 4

Different radioactive material have

Question # 5

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 # 6

Alfa particles are

Question # 7

Electrons are

Question # 8

γ-rays are

Question # 9

Radiation detector are used to

Question # 10

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

Question # 11

Structure of the nucleus was explained by

Question # 12

A pair of quark and antiquark makes a:

Question # 13

Neutron was suggested to be in the nucleus by:

Question # 14

Mass of proton is of order of

Question # 15

1 amu is equal to.

Question # 16

In radioactive decay, the new element which is formed due to the disintegration of original element is called

Question # 17

β-particles are easily deflected by collisions than heavy

Question # 18

Neutrons are

Question # 19

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

Question # 20

When a charged particle passes through matter, it produces ionization, this effect is used in

Question # 21

Fraction of the decaying atoms per unit time is called

Question # 22

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

Question # 23

γ-rays behave like a particle because they explain the

Question # 24

Radioactivity was discovered by:

Question # 25

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

Question # 26

When certain nucleus emits anα particle, its mass number:

Question # 27

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

Question # 28

Which of the following material has smaller has life

Question # 29

Radioactivity is

Question # 30

The rate of decay of a radioactive substance

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 Alfa particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
3 The number of protons inside a nucleus is called
A. mass number
B. atomic weight
C. atomic number
D. none of these
4 The number if neutrons in the nucleus of 92U235are
A. Infinite
B. 92
C. 235
D. 143
5 Mass of proton is
A. 1.67 x 10-27kg
B. 1.67 x 10-31kg
C. 1.66 x 10-34kg
D. 1.67 x 10-17kg
6 The energy acquired by a mass of 1g moving with the speed of light is
A. 3 x 108J
B. 9 x 1013J
C. 3 x 1013J
D. 9 x 1016J
7 Neon gas have three isotopes whose atomic numbers are
A. 20, 24 , 23
B. 20, 21 , 22
C. 20, 19 , 21
D. none of these
8 For an atom having atomic number Z and atomic weight A, the charge on the nucleus is
A. A - Z
B. A + Z
C. Z
D. A
9 Referring to the above figure, we can say that of all the elements, the most stable element is
A. Phosphours
B. Iron
C. uranium
D. Lithium
10 The number of isotopes of hydrogen are
A. 2
B. 1
C. 3
D. 4

Test Questions

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!