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

Rutherford performed an experiment on nuclear reactions in:

Question # 2

The number if neutrons in the nucleus of 92U235are

Question # 3

Beta particles are

Question # 4

Curie is a unit of

Question # 5

The isotope/s of hydrogen is /are:

Question # 6

γ-rays behave like a particle because they explain the

Question # 7

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

Question # 8

A pair of quark and antiquark makes a:

Question # 9

Binding energy per nucleus is

Question # 10

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

Question # 11

β-particles are easily deflected by collisions than heavy

Question # 12

Radium was discovered by:

Question # 13

The rate of decay of a radioactive substance

Question # 14

Mass of proton is of order of

Question # 15

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

Question # 16

Fraction of the decaying atoms per unit time is called

Question # 17

The half life of uranium-238 is

Question # 18

The number of isotopes of hydrogen are

Question # 19

Nucleus consists of

Question # 20

Gamma rays consist of steam of

Question # 21

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

Question # 22

The missing mass which is converted to energy in the formation of nucleus, is called

Question # 23

1 amu is equal to

Question # 24

Three quarks make:

Question # 25

Which of the following material has smaller has life

Question # 26

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

Question # 27

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

Question # 28

Charge on neutron is

Question # 29

The total charge of any nucleus is given as

Question # 30

When certain nucleus emits anα particle, its mass number:

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 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
2 The chemical behaviour of an atom is determined by
A. binding energy
B. atomic number
C. mass number
D. number of isotopes
3 When a nucleus emits an alpha particles, its charge number decreases by
A. 3
B. 2
C. 6
D. 5
4 Neutron was disvovered by:
A. Rutherford in 1920
B. Chadwick in 1922
C. Bohr in 1913
D. Compton in 1927
5 If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be
A. Equal to 1
B. Less than 1
C. Greater than 1
D. Infinity
6 Nuclei that have the same charge number but different mass number are called
A. isotones
B. isomers
C. isotopes
D. isobars
7 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
8 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
A. nuclear fission
B. nuclear fusion
C. man defect
D. radioactivity
9 Three quarks make:
A. An electron
B. A meson
C. A baryon
D. A photon
10 The nucleus/nuclei of hydrogen is/are:
A. Proton
B. Deuteron
C. Triton
D. All of these

Test Questions

Is this page helpful?