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

γ-rays are

Question # 2

Binding energy per nucleus is

Question # 3

The nuclei of an element having the same charge number but different mass numbers are called:

Question # 4

The unit of decay constant is

Question # 5

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

Question # 6

A pair of quark and antiquark makes a:

Question # 7

Beta particles are

Question # 8

How many isotopes of helium are present?

Question # 9

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

Question # 10

Neutron was discovered by

Question # 11

The nucleus/nuclei of hydrogen is/are:

Question # 12

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

Question # 13

Different radioactive material have

Question # 14

Radioactivity was discovered by:

Question # 15

The number of protons inside a nucleus is called

Question # 16

The chemical behaviour of an atom is determined by

Question # 17

β-particles are easily deflected by collisions than heavy

Question # 18

The rate of decay of a radioactive substance

Question # 19

Nuclei that have the same charge number but different mass number are called

Question # 20

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

Question # 21

When a nucleus emits an alpha particle, it atomic mass decreased by

Question # 22

The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains

Question # 23

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

Question # 24

Curie is a unit of

Question # 25

In wilson cloud chamber, the air becomes saturated with:

Question # 26

The total charge of any nucleus is given as

Question # 27

The isotope/s of hydrogen is /are:

Question # 28

Neutrons are

Question # 29

The half lie of radium-226 is

Question # 30

There is present in paraffin a large amount of:

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 Different radioactive material have
A. same half lives
B. different half lives
C. same mean lives
D. same total lives
2 When certain nucleus emits anα particle, its mass number:
A. Increases by one
B. Decreases by one
C. Remain same
D. Decreases by four
3 Proton was discovered by Rutherford in
A. 1915
B. 1906
C. 1910
D. 1920
4 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
5 When radioactive nucleus emits aβ-particle, the proton-neutron ratio
A. decrease
B. increase
C. same
D. none of these
6 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
7 The time required for a radioactive material to decrease in active by one half is called
A. half time
B. half life
C. disintegration time
D. mean life
8 The range of particle depends upon the factor
A. charge, mass and energy of particle
B. density of medium
C. ionization potential of the atoms
D. all the above
9 The number of all the protons and neutrons in a nucleus is known as
A. atomic number
B. mass number
C. charge number
D. none of these
10 The total charge of any nucleus is given as
A. Ze2
B. Z2e
C. Z/e
D. Ze

Test Questions