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Physics FSC Part 2 Chapter 21 Online MCQ's Test MCQs With Answers
Question # 1
Half life of Uranium -239 is
Choose an answer
26.5 minutes
24.5 minutes
25.5 minutes
23.5 minutes
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Question # 2
The amount of energy equivalent to 1 a.m.u is
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931.5 MeV
93.15 MeV
9.315 MeV
2.224 MeV
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Question # 3
A positron is a particle having.
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Mass equal to electron
Charge equal to electron
Mass equal to mass of electron but charge opposite to charge of electron.
Mass equal to proton
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Question # 4
Before and after nuclear reaction the number of protons and neutrons:
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Must be different
Must be decreased
Must be increased
Remains same
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Question # 5
Binding energy for deuteron nucleus is given by
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2.8 MeV
2.23 MeV
2.28 MeV
2.25 MeV
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Question # 6
Mass equivalent of 931 MeV energy is:
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6.02 x 10
-23
kg
1.766 x 10
-27
kg
2.67 x 10
-29
kg
6.02 x 10
-87
kg
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Question # 7
The charge of an alpha particle is equal to
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-e
+e
-2e
2e
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Question # 8
If the following particle have the same energy, which particle has the shortest wave length.
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alpha particle
Neutron
Beta particle
Proton
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Question # 9
One joule of energy absorbed per kilogram of a body is
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Roentgen
Grey
Rem
Curie
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Question # 10
Iodine -131 is used for the treatment by
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Bones
Eyes
thyroid glands
Lungs
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Question # 11
Binding energy per nucleus for uranium is above:
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6.7 Mev
7.7 Mev
6.9 MeV
7.9 MeV
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Question # 12
Circulation of blood is studied by radio isotope.
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Cobalt -60
Phosphorus -32
Sodium -24
Iodine -131
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Question # 13
The particles equal in mass but greater than proton are.
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Mesons
Baryons
Leptons
Hadrons
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Question # 14
In Wilson cloud chamber, ß-particles leave
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Thin and continuous tracks
Thick and continuous tracks
No tracks
Thin and discontinuous tracks
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Question # 15
Which of the following basic force is able to provide an attraction between two neutrons:
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Electrostatic and nuclear b
Electrostatic and gravitational
Gravitational and strong nuclear
Only nuclear force
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Question # 16
Materials can be identified by measuring their
Choose an answer
Mass
Half life
Both a and b
None of a,b,c
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Question # 17
The bnding energy for nucleus A is 7.7 Me V and that for nucleus B is 7.8 MeV. Which nucleus has the larger mass?
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Nucleas A
Nucleus B
Less than nucleus
None of these
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