ECAT Pre Engineering Physics Chapter 21 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 21 Nuclear Physics

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

  • Total Questions15

  • Time Allowed20

Start Test Download PDF

Physics ECAT Pre Engineering Chapter 21 Nuclear Physics

00:00
Question # 1

The number if neutrons in the nucleus of 92U235are

Question # 2

Heavy water is made of one oxygen atom and two atoms of:

Question # 3

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

Question # 4

Alfa particles are

Question # 5

Neutrons are

Question # 6

Charge on neutron is

Question # 7

When a nucleus emits an alpha particle, it atomic mass decreased by

Question # 8

Neutron was disvovered by:

Question # 9

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

Question # 10

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

Question # 11

The isotope/s of hydrogen is /are:

Question # 12

The rate of decay of a radioactive substance

Question # 13

A particle having the mass of electron and charge of a proton is called a

Question # 14

The chemical properties of all the isotopes of an elements are

Question # 15

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

Submit

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


Topic Test

00:00
Submit

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

  • A
    Amjad Ali 25 - Dec - 2024 00 Min 04 Sec 60/60
  • R
    Rahimsiddiqui Siddiqui 04 - Jul - 2024 00 Min 06 Sec 60/60
  • M
    Muhammad 24 - May - 2024 00 Min 09 Sec 60/60
  • F
    Farzand Shah Farzand Shah 31 - May - 2024 00 Min 41 Sec 60/60
  • B
    Bilal Javed 02 - Jun - 2024 01 Min 48 Sec 60/60
  • S
    suzi 11 - Feb - 2026 01 Min 20 Sec 56/60
  • M
    M Umer Arain 28 - Dec - 2024 00 Min 06 Sec 55/60
  • A
    Abdul Samad 03 - Jun - 2024 01 Min 56 Sec 50/60
  • S
    Sammad Ali 30 - May - 2024 02 Min 33 Sec 50/60
  • M
    Malaika Waqar 20 - Apr - 2024 03 Min 12 Sec 50/60
  • U
    umaima mubashar 31 - May - 2024 05 Min 21 Sec 50/60
  • Z
    Zargaii 92 28 - May - 2024 03 Min 56 Sec 45/60
  • A
    Abdullah Sadakat Ali 27 - May - 2024 05 Min 03 Sec 45/60
  • A
    Ayan Khan 09 - Aug - 2024 01 Min 58 Sec 40/60
  • M
    Muhammad Haseeb 25 - Nov - 2024 02 Min 17 Sec 40/60

ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 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
2 Neutron was suggested to be in the nucleus by:
A. Rutherford in 1920
B. Bohar in 1913
C. Dirac in 1928
D. Anderson in 1932
3 During the nuclear changes, the law/s of conservation that hold/s are that of:
A. Charge
B. energy
C. Momentum
D. Mass
4 The half lie of radium-226 is
A. 238 years
B. 4.5 x 109days
C. 1620 years
D. 332 years
5 Neutron was disvovered by:
A. Rutherford in 1920
B. Chadwick in 1922
C. Bohr in 1913
D. Compton in 1927
6 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
7 The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains
A. 3 more neutrons
B. 3 more electrons
C. 3 more protons
D. 3 more ions
8 Beta particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
9 A mass spectrograph sort out
A. molecules
B. atoms
C. elements
D. isotopes
10 The rate of decay of radioactive substance
A. is constant
B. decrease exponentially with time
C. varies inversely as time
D. decreases linearly with time

Test Questions

Is this page helpful?