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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
Alfa , beta and gamma rays are emitted from a radio-active substance
Question # 2
Examples of moderators used in a fission reactor is/are:
Question # 3
The isotope/s of hydrogen is /are:
Question # 4
1 amu is equal to
Question # 5
Nucleus of a hydrogen atom may contain:
Question # 6
During the nuclear changes, the law/s of conservation that hold/s are that of:
Question # 7
The total charge of any nucleus is given as
Question # 8
The energy is found from Einstein's mass energy relation is called
Question # 9
When radioactive nucleus emits aβ-particle, the proton-neutron ratio
Question # 10
A pair of quark and antiquark makes a:
Question # 11
The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains
Question # 12
Radioactivity is
Question # 13
Mass of neutron is
Question # 14
The figure 1.007276μ shows the mass of an:
Question # 15
The distance travelled byα-particle in a medium before coming to rest, is called
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A Ayan Khan 09 - Aug - 2024 01 Min 58 Sec 40/60
ECAT Physics Chapter 21 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | Radioactivity was discovered by: |
A. Becquerel
B. Marie curie
C. Pierre curie
D. All of them
|
| 2 | The half lie of radium-226 is |
A. 238 years
B. 4.5 x 109days
C. 1620 years
D. 332 years
|
| 3 | The most abundant isotope of neon is |
A. neon-20
B. neon-21
C. neon-22
D. neon-23
|
| 4 | The half life of radioactive substances depends upon |
A. amount of substance
B. energy of substance
C. state of substance
D. temperature of substance
|
| 5 | Which of the following material has longer half life |
A. radium
B. polonium
C. radium
D. uranium
|
| 6 | An alpha particle has a charge of |
A. +2e
B. -2e
C. -e
D. +3e
|
| 7 | Nucleus of a hydrogen atom may contain: |
A. One neutron only
B. Two protons and one neutron
C. Two protons and two neutrons
D. Aany of above
|
| 8 | β-particles are easily deflected by collisions than heavy |
A. α-particles
B. β-particles
C. γ-particles
D. none of these
|
| 9 | The mass of the nucleus is always less than the total man of the protons and neutron that make up the nucleus. The difference of the two masses is called |
A. nuclear fission
B. nuclear fusion
C. man defect
D. radioactivity
|
| 10 | U-238 present in the natural uranium is about: |
A. 59%
B. 0.007%
C. 99%
D. 39%
|
Test Questions
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alishba rasheed
03 Mar 2018easy mcqs