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

Radioactivity is

Question # 2

For Protium, the mass defect is:

Question # 3

A curie represents a very strong source of

Question # 4

Electrons are

Question # 5

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

Question # 6

The rate of decay of radioactive substance

Question # 7

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

Question # 8

A pair of quark and antiquark makes a:

Question # 9

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

Question # 10

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

Question # 11

The nucleus left after the emission of some radiation is called:

Question # 12

The rate of decay of a radioactive substance

Question # 13

The number of isotopes of hydrogen are

Question # 14

Examples of moderators used in a fission reactor is/are:

Question # 15

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

Question # 16

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

Question # 17

In his experiment on nuclear reactions, Rutherford bombardedα particles on:

Question # 18

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

Question # 19

The half life of radioactive substances depends upon

Question # 20

Nucleus consists of

Question # 21

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

Question # 22

The total charge of any nucleus is given as

Question # 23

The isotope/s of hydrogen is /are:

Question # 24

In 1932 Chadwick discovered

Question # 25

Marie curie and Pierre curie discovered:

Question # 26

There is present in paraffin a large amount of:

Question # 27

Fraction of the decaying atoms per unit time is called

Question # 28

Structure of the nucleus was explained by

Question # 29

Which are not the elementary particles?

Question # 30

Different radioactive material have

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 For an atom having atomic number 'Z' and atomic weight 'A', the number of neutrons in the nucleous is
A. A - Z
B. A
C. Z
D. A + Z
2 The chemical properties of all the isotopes of an elements are
A. same
B. different
C. slightly different
D. none of these
3 An alpha particle has a charge of
A. +2e
B. -2e
C. -e
D. +3e
4 The energy is found from Einstein's mass energy relation is called
A. binding energy of electron
B. binding energy of proton
C. binding energy of neutron
D. binding energy of nucleus
5 During the nuclear changes, the law/s of conservation that hold/s are that of:
A. Charge
B. energy
C. Momentum
D. Mass
6 Alfa , beta and gamma rays are emitted from a radio-active substance
A. spontaneously
B. when it is heated
C. when it is exposed to light
D. When it interacts with the other particle
7 The distance travelled byα-particle in a medium before coming to rest, is called
A. range ofγ-particle
B. range of neutrons
C. range of particle
D. none of these
8 Hydrogen atom with only one proton and one neutron in its nucleus, and one electron, is called
A. deuterium
B. protium
C. tritium
D. none of these
9 Maric Curie and Pieree Curie discovered two new radioactive elements, which are called
A. polonium uranium
B. uranium and radium
C. polonium and radium
D. none of these
10 The number if neutrons in the nucleus of 92U235are
A. Infinite
B. 92
C. 235
D. 143

Test Questions