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

The half life of uranium-238 is

Question # 2

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

Question # 3

1 amu is equal to

Question # 4

Nucleon means:

Question # 5

U-238 present in the natural uranium is about:

Question # 6

Rate of decay is actually described by.

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

Neutron was discovered in

Question # 11

A pair of quark and antiquark makes a:

Question # 12

Gamma rays consist of steam of

Question # 13

Curie is a unit of

Question # 14

The counter, which also provides the power to the G.M. tube is called:

Question # 15

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

Question # 16

The nucleus/nuclei of hydrogen is/are:

Question # 17

A curie represents a very strong source of

Question # 18

The diameter of an atom is of the order

Question # 19

The penetration power ofβ-particle is

Question # 20

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

Question # 21

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

Question # 22

For Protium, the mass defect is:

Question # 23

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

Question # 24

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

Question # 25

γ-rays are

Question # 26

Which of these is not a radiation detector

Question # 27

The half lie of radium-226 is

Question # 28

The unit of decay constant is:

Question # 29

The half life of radioactive substances depends upon

Question # 30

Nucleus consists 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 When certain nucleus emits anα particle, its mass number:
A. Increases by one
B. Decreases by one
C. Remain same
D. Decreases by four
2 Charge on proton is
A. 1.59 x 10-9C
B. 1.59 x 10-7C
C. -1.59 x 10-19 C
D. 1.59 x 10-19C
3 Which are not the elementary particles?
A. Photons
B. Leptons
C. Hadrons
D. Quarks
4 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
5 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
6 The rate of decay of a radioactive substance
A. decrease exponentially with time
B. decreases linearly with time
C. increases linearly with time
D. increases exponentially with time
7 How much time, theα-particle more massive than an electron
A. 600
B. 7000
C. 5000
D. 15000
8 Neutron was discovered in
A. 1915
B. 1920
C. 1925
D. 1932
9 How many isotopes of helium are present?
A. 1
B. 2
C. 3
D. 4
10 During the nuclear changes, the law/s of conservation that hold/s are that of:
A. Charge
B. energy
C. Momentum
D. Mass

Test Questions

Is this page helpful?

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!