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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
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Question # 1
Heavy water is made of one oxygen atom and two atoms of:
Question # 2
Alfa , beta and gamma rays are emitted from a radio-active substance
Question # 3
1 amu is equal to
Question # 4
Radiation detector are used to
Question # 5
Binding energy per nucleus is
Question # 6
Different radioactive material have
Question # 7
Charge on neutron is
Question # 8
In radioactive decay, the new element which is formed due to the disintegration of original element is called
Question # 9
The distance travelled byα-particle in a medium before coming to rest, is called
Question # 10
When a charged particle passes through matter, it produces ionization, this effect is used in
Question # 11
β-particles are easily deflected by collisions than heavy
Question # 12
The energy is found from Einstein's mass energy relation is called
Question # 13
Which of the following material has longer half life
Question # 14
When radioactive nucleus emits aβ-particle, the proton-neutron ratio
Question # 15
Radioactivity was discovered by:
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ECAT Physics Chapter 21 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | The number if neutrons in the nucleus of 92U235are |
A. Infinite
B. 92
C. 235
D. 143
|
| 2 | In his experiment on nuclear reactions, Rutherford bombardedα particles on: |
A. Nitrogen
B. Hydrogen
C. Lead
D. Oxygen
|
| 3 | According to Rutherford atomic model, the positive charge in an atom |
A. is concentrated at its centre
B. is in the form of positive electron at same distance from its centre
C. is spread uniformly through its volume
D. none of these
|
| 4 | Binding energy per nucleus is |
A. greater for heavy nucleus
B. least for heavy nucleus
C. greatest for light nuclei
D. decreases for medium weight niclei
|
| 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 | Radioactivity was discovered by |
A. Rutherford
B. Henri Becqureal
C. Maxwell
D. James Chadwick
|
| 7 | 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
|
| 8 | Three quarks make: |
A. An electron
B. A meson
C. A baryon
D. A photon
|
| 9 | β-particles are easily deflected by collisions than heavy |
A. α-particles
B. β-particles
C. γ-particles
D. none of these
|
| 10 | The energy is found from Einstein's mass energy relation is called |
A. binding energy of electron
B. binding energy of proton
C. binding energy of neutron
D. binding energy of nucleus
|
Test Questions
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alishba rasheed
03 Mar 2018easy mcqs