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

1 amu is equal to

Question # 2

For an atom having atomic number Z and atomic weight A, the charge on the nucleus is

Question # 3

Which of the following material has longer half life

Question # 4

The unit of decay constant is:

Question # 5

How much time, theα-particle more massive than an electron

Question # 6

The emission of radiations take place in elements, having charge number greater than

Question # 7

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

Question # 8

Charge on neutron is

Question # 9

γ-rays are

Question # 10

After alpha decay the atomic number of the atom

Question # 11

Mass of proton is of order of

Question # 12

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

Question # 13

Different radioactive material have

Question # 14

Which are not the elementary particles?

Question # 15

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

Question # 16

Radiation detector are used to

Question # 17

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

Question # 18

There is present in paraffin a large amount of:

Question # 19

Rutherford performed an experiment on nuclear reactions in:

Question # 20

The nucleus/nuclei of hydrogen is/are:

Question # 21

Neutron was disvovered by:

Question # 22

Alfa particles are

Question # 23

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

Question # 24

The rate of decay of a radioactive substance

Question # 25

The chemical behaviour of an atom is determined by

Question # 26

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

Question # 27

Charge on proton is

Question # 28

Beta particles are

Question # 29

Electrons are

Question # 30

The chemical properties of an element depends upon the number 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 If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by
A. -4
B. 4
C. 2
D. 1
2 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
3 The half life of uranium-238 is
A. 6.2 x 109years
B. 4.5 x 109days
C. 4.5 x 109years
D. 1.3 x 106years
4 Nucleus consists of
A. proton and neutron
B. protons and electron
C. electron and neutron
D. protons only
5 Fraction of the decaying atoms per unit time is called
A. decay atom
B. decay element
C. decay constant
D. decay
6 Hydrogen atom with only one proton in its nucleus, and one electron in its orbit is called
A. deuteron
B. deterium
C. protium
D. tritium
7 Examples of moderators used in a fission reactor is/are:
A. Water
B. Heavy water
C. Carbon
D. Hydrocarbon
8 In radio-active decay, the original element which disintegrate to another element is called
A. element
B. daughter element
C. parent element
D. none of these
9 Radioactivity is
A. self disruptive activity
B. spontaneous activity
C. exhibited by all elements under proper conditions
D. both 'a' and 'b'
10 Which are not the elementary particles?
A. Photons
B. Leptons
C. Hadrons
D. Quarks

Test Questions

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!