ECAT Pre Computer Science Chapter 21 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 21 Nuclear Physics

Try The MCQ's Test For ECAT Physics Chapter 21 Nuclear Physics

  • Total Questions15

  • Time Allowed20

Start Test Download PDF

ECAT Physics Chapter 21 Nuclear Physics

00:00
Question # 1

The unit of decay constant is

Question # 2

The isotope/s of hydrogen is /are:

Question # 3

β-particles are easily deflected by collisions than heavy

Question # 4

Nucleus of a hydrogen atom may contain:

Question # 5

Mass of proton is of order of

Question # 6

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

Question # 7

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

Question # 8

When certain nucleus emits aβ-particles, is mass number:

Question # 9

The chemical properties of all the isotopes of an elements are

Question # 10

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

Question # 11

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

Question # 12

γ-rays behave like a particle because they explain the

Question # 13

Fraction of the decaying atoms per unit time is called

Question # 14

Structure of the nucleus was explained by

Question # 15

Radioactivity

Submit

Prepare Complete Set Wise ECAT Physics Chapter 21 Nuclear Physics MCQs Online With Answers


Topic Test

00:00
Submit

Top Scorers Of ECAT Physics Chapter 21 Nuclear Physics MCQ`s Test

  • H
    Heer 06 - Jan - 2024 00 Min 51 Sec 60/60
  • M
    maha dhedhi 29 - Jul - 2022 00 Min 52 Sec 60/60
  • B
    Bushra Rehmat 14 - Jul - 2023 02 Min 07 Sec 60/60
  • M
    Muneeb ur Rehman 28 - Jun - 2026 02 Min 20 Sec 56/60
  • M
    Mian House 31 - May - 2024 02 Min 30 Sec 55/60
  • M
    Muhammad Iftikhar 17 - Mar - 2023 02 Min 38 Sec 55/60
  • A
    Abdullah Baloch 10 - Aug - 2024 03 Min 56 Sec 55/60
  • M
    Mohsin iftikhar 09 - Mar - 2024 08 Min 35 Sec 55/60
  • M
    Muhammad Zia 28 - Mar - 2026 11 Min 05 Sec 52/60
  • S
    Sana Hashim 23 - May - 2022 01 Min 50 Sec 50/60
  • A
    Ali Jaan 15 - Apr - 2022 01 Min 47 Sec 45/60
  • M
    Muqadas Zahra 14 - Apr - 2022 04 Min 33 Sec 45/60
  • O
    omer attique 14 - Mar - 2023 02 Min 00 Sec 40/60
  • T
    tehreemnadeem 12 - Jul - 2022 02 Min 13 Sec 40/60
  • H
    Hamza Nawaz 05 - Jun - 2024 02 Min 42 Sec 40/60

ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The half lie of radium-226 is
A. 238 years
B. 4.5 x 109days
C. 1620 years
D. 332 years
2 Marie curie and Pierre curie discovered:
A. Uranium
B. Polonium
C. Radium
D. Both (A) and (C)
3 Radioactivity
A. is exhibited more by semiconductors in general
B. in exhibited more by the element when they are coupled
C. with other radioactive elements by a covalent bond
D. is an atomic property of radioactive elements
4 The reciprocal of decay constant λ of a radioactive material is:
A. Frequency
B. Half life
C. Year
D. Mean life
5 Curie is a unit of
A. reluctance
B. resistivity
C. binding energy
D. radioactivity
6 Nucleus consists of
A. proton and neutron
B. protons and electron
C. electron and neutron
D. protons only
7 The half life of radioactive substances depends upon
A. amount of substance
B. energy of substance
C. state of substance
D. temperature of substance
8 In 1932 Chadwick discovered
A. proton
B. neutron
C. photon
D. electron
9 Referring to the above figure, we can say that of all the elements, the most stable element is
A. Phosphours
B. Iron
C. uranium
D. Lithium
10 For an atom having atomic number Z and atomic weight A, the number of electron in an atoms
A. A - Z
B. A + Z
C. Z
D. A

Test Questions