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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
The total charge of any nucleus is given as
Question # 2
A curie represents a very strong source of
Question # 3
Fraction of the decaying atoms per unit time is called
Question # 4
An alpha particle has a charge of
Question # 5
The distance travelled byα-particle in a medium before coming to rest, is called
Question # 6
If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by
Question # 7
The number of isotopes of hydrogen are
Question # 8
Mass of neutron is
Question # 9
γ-rays are
Question # 10
Referring to the above figure, we can say that of all the elements, the most stable element is
Question # 11
A mass difference of 0.0012 u is equivalent to and energy of:
Question # 12
The figure 1.007276μ shows the mass of an:
Question # 13
The number of all the protons and neutrons in a nucleus is known as
Question # 14
In his experiment on nuclear reactions, Rutherford bombardedα particles on:
Question # 15
The most abundant isotope of neon is
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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 | Examples of moderators used in a fission reactor is/are: |
A. Water
B. Heavy water
C. Carbon
D. Hydrocarbon
|
| 3 | If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by |
A. -4
B. 4
C. 2
D. 1
|
| 4 | When certain nucleus emits anα particle, its mass number: |
A. Increases by one
B. Decreases by one
C. Remain same
D. Decreases by four
|
| 5 | Structure of the nucleus was explained by |
A. J.J Thomson
B. Bohr
C. Millikan
D. Rutherford
|
| 6 | For an atom having atomic number Z and atomic weight A, the charge on the nucleus is |
A. A - Z
B. A + Z
C. Z
D. A
|
| 7 | The chemical properties of all the isotopes of an elements are |
A. same
B. different
C. slightly different
D. none of these
|
| 8 | The chemical behaviour of an atom is determined by |
A. binding energy
B. atomic number
C. mass number
D. number of isotopes
|
| 9 | β-particles are easily deflected by collisions than heavy |
A. α-particles
B. β-particles
C. γ-particles
D. none of these
|
| 10 | A mass spectrograph sort out |
A. molecules
B. atoms
C. elements
D. isotopes
|
Test Questions
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alishba rasheed
03 Mar 2018easy mcqs