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

Different radioactive material have

Question # 2

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

Question # 3

Which of these is not a radiation detector

Question # 4

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

Question # 5

The half life of uranium-238 is

Question # 6

A mass spectrograph sort out

Question # 7

The diameter of an atom is of the order

Question # 8

Nucleon means:

Question # 9

A particle having the mass of electron and charge of a proton is called a

Question # 10

Electrons are

Question # 11

The number if neutrons in the nucleus of 92U235are

Question # 12

Fraction of the decaying atoms per unit time is called

Question # 13

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

Question # 14

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

Question # 15

When radioactive nucleus emits aβ-particle, the proton-neutron ratio

Question # 16

Structure of the nucleus was explained by

Question # 17

Nucleus of a hydrogen atom may contain:

Question # 18

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

Question # 19

1 amu is equal to

Question # 20

Radiation detector are used to

Question # 21

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

Question # 22

Gamma rays consist of steam of

Question # 23

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

Question # 24

The rate of decay of a radioactive substance

Question # 25

Heavy water is made of one oxygen atom and two atoms of:

Question # 26

Radioactivity was discovered by:

Question # 27

The most abundant isotope of neon is

Question # 28

The number of protons inside a nucleus is called

Question # 29

The number of isotopes of hydrogen are

Question # 30

In radio-active decay, the original element which disintegrate to another element is called

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 Nucleon means:
A. Only electrons
B. Only neutrons
C. Only protons
D. Both (A ) and (C)
2 When a nucleus emits an alpha particle, it atomic mass decreased by
A. 2
B. 1
C. 4
D. 3
3 The nucleus/nuclei of hydrogen is/are:
A. Proton
B. Deuteron
C. Triton
D. All of these
4 The isotope/s of hydrogen is /are:
A. Protium
B. Deuterium
C. Tritium
D. Both (A) and (B)
5 The number of protons inside a nucleus is called
A. mass number
B. atomic weight
C. atomic number
D. none of these
6 Radiation detector are used to
A. measure intensity of radiation
B. measure energy of radiation
C. difference between different types of radiation
D. all the above
7 According to Rutherford atomic model, the positive charge in an atom
A. is concentrated at its centre
B. is in the form of positive electron at same distance from its centre
C. is spread uniformly through its volume
D. none of these
8 Which are not the elementary particles?
A. Photons
B. Leptons
C. Hadrons
D. Quarks
9 A curie represents a very strong source of
A. α-particle
B. β-particle
C. γ-particle
D. none of these
10 There is present in paraffin a large amount of:
A. Nitrogen
B. Hydrogen
C. Carbon
D. Baryllium

Test Questions

Is this page helpful?