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

Neutron was disvovered by:

Question # 2

The isotope/s of hydrogen is /are:

Question # 3

γ-rays behave like a particle because they explain the

Question # 4

In 1932 Chadwick discovered

Question # 5

The chemical behaviour of an atom is determined by

Question # 6

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

Question # 7

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

Question # 8

Electrons are

Question # 9

Mass of proton is of order of

Question # 10

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

Question # 11

After alpha decay the atomic number of the atom

Question # 12

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

Question # 13

Proton was discovered by Rutherford in

Question # 14

Nucleus of a hydrogen atom may contain:

Question # 15

Neutron was suggested to be in the nucleus by:

Question # 16

Structure of the nucleus was explained by

Question # 17

How many isotopes of helium are present?

Question # 18

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

Question # 19

In wilson cloud chamber, the air becomes saturated with:

Question # 20

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

Question # 21

The rate of decay of radioactive substance

Question # 22

The half lie of radium-226 is

Question # 23

The rate of decay of a radioactive substance

Question # 24

Fraction of the decaying atoms per unit time is called

Question # 25

Gamma rays consist of steam of

Question # 26

The unit of decay constant is

Question # 27

The number of isotopes of hydrogen are

Question # 28

Different radioactive material have

Question # 29

The figure 1.007276μ shows the mass of an:

Question # 30

Referring to the above figure, we can say that of all the elements, the most stable element is

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 1 amu is equal to.
A. 1.66 x 10-24kg
B. 1.66 x 10-19kg
C. 1.66 x 10-24kg
D. 1.66 x 10-27kg
2 The half life of radioactive substances depends upon
A. amount of substance
B. energy of substance
C. state of substance
D. temperature of substance
3 Beta particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
4 How much time, theα-particle more massive than an electron
A. 600
B. 7000
C. 5000
D. 15000
5 The amount of energy equivalent to 1 a.m.u is
A. 9.315 Mev
B. 93.15 Mev
C. 931.5 Mev
D. 2.22 Mev
6 Rutherford performed an experiment on nuclear reactions in:
A. 1718 A.D
B. 1818 A.D
C. 1918 A.D
D. 2001 A.D.
7 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
8 The total charge of any nucleus is given as
A. Ze2
B. Z2e
C. Z/e
D. Ze
9 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
10 Nucleus of a hydrogen atom may contain:
A. One neutron only
B. Two protons and one neutron
C. Two protons and two neutrons
D. Aany of above

Test Questions

Is this page helpful?