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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
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Total Questions15
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Time Allowed20
Physics ECAT Pre Engineering Chapter 21 Nuclear Physics
00:00
Question # 1
Fraction of the decaying atoms per unit time is called
Question # 2
Neutron was suggested to be in the nucleus by:
Question # 3
Radiation detector are used to
Question # 4
The figure 1.007276μ shows the mass of an:
Question # 5
The counter, which also provides the power to the G.M. tube is called:
Question # 6
The energy is found from Einstein's mass energy relation is called
Question # 7
The number if neutrons in the nucleus of 92U235are
Question # 8
Pair production take place when energy ofγ-rays photon is
Question # 9
Radioactivity was discovered by
Question # 10
The energy acquired by a mass of 1g moving with the speed of light is
Question # 11
Heavy water is made of one oxygen atom and two atoms of:
Question # 12
The rate of decay of a radioactive substance
Question # 13
The range of particle depends upon the factor
Question # 14
The distance travelled byα-particle in a medium before coming to rest, is called
Question # 15
The unit of decay constant is:
Prepare Complete Set Wise Physics ECAT Pre Engineering Chapter 21 Nuclear Physics MCQs Online With Answers
Top Scorers Of Physics ECAT Pre Engineering Chapter 21 Nuclear Physics MCQ`s Test
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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 -
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A Abdullah Sadakat Ali 27 - May - 2024 05 Min 03 Sec 45/60 -
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M Muhammad Haseeb 25 - Nov - 2024 02 Min 17 Sec 40/60
ECAT Physics Chapter 21 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | How many isotopes of helium are present? |
A. 1
B. 2
C. 3
D. 4
|
| 2 | In radioactive decay, the new element which is formed due to the disintegration of original element is called |
A. element
B. daughter element
C. parent element
D. none of these
|
| 3 | Hydrogen atom with only one proton and one neutron in its nucleus, and one electron, is called |
A. deuterium
B. protium
C. tritium
D. none of these
|
| 4 | Charge on neutron is |
A. 1.6 x 10-19C
B. zero
C. -1.6 x 10-19C
D. 1.2 x 10-19C
|
| 5 | Mass of proton is |
A. 1.67 x 10-27kg
B. 1.67 x 10-31kg
C. 1.66 x 10-34kg
D. 1.67 x 10-17kg
|
| 6 | A particle having the mass of electron and charge of a proton is called a |
A. photon
B. position
C. antiproton
D. antineutrino
|
| 7 | Alfa particles are |
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
|
| 8 | 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
|
| 9 | The range ofβ-particle in air is greater than that ofα-particle by |
A. 1000 times
B. 100 times
C. 15 times
D. 10 times
|
| 10 | The chemical behaviour of an atom is determined by |
A. binding energy
B. atomic number
C. mass number
D. number of isotopes
|
Test Questions
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alishba rasheed
03 Mar 2018easy mcqs