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 half life of uranium-238 is

Question # 2

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

Question # 3

The figure 1.007276μ shows the mass of an:

Question # 4

Neon gas have three isotopes whose atomic numbers are

Question # 5

The unit of decay constant is:

Question # 6

For an atom having atomic number 'Z' and atomic weight 'A', the number of neutrons in the nucleous is

Question # 7

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

Question # 8

Beta particles are

Question # 9

Phenomenon of radioactivity is due to disintegration of

Question # 10

Which of the following material has smaller has life

Question # 11

Proton was discovered by Rutherford in

Question # 12

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

Question # 13

Nucleus consists of

Question # 14

The nucleus/nuclei of hydrogen is/are:

Question # 15

An alpha particle has a charge of

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 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
2 A mass spectrograph sort out
A. molecules
B. atoms
C. elements
D. isotopes
3 The diameter of an atom is of the order
A. 10-125m
B. 10-11m
C. 10-10m
D. 10-9m
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 The nucleus left after the emission of some radiation is called:
A. Parent nucleus
B. Daughter necleus
C. Mother necleus
D. Any of these
6 Neutrons are
A. positive charge
B. negatively charged
C. massless
D. neutral
7 γ-rays behave like a particle because they explain the
A. Compton effect
B. Photoelectric effect
C. Pair-production
D. all the above
8 How many isotopes of helium are present?
A. 1
B. 2
C. 3
D. 4
9 The number if neutrons in the nucleus of 92U235are
A. Infinite
B. 92
C. 235
D. 143
10 Mass of proton is of order of
A. 10-31gm
B. 10-27kg
C. 10-24gm
D. 10+27kg

Test Questions

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!