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Online Tests
Physics FSC Part 2 Chapter 21 Online MCQ's Test MCQs With Answers
Question # 1
Cobalt -60 is the source for
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Alpha rays
Gama rays
Beta rays
Neutron
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Question # 2
The scientist who suggested the presence of neutron was:
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Bohr
Rutherford
Chadwick
J.J Thomson
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Question # 3
In Wilson cloud chamber, if tracks are thick, straight and continuous, then particle is
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a-particles
ß-particles
Y-rays
All
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Question # 4
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 # 5
The charge of an alpha particle is equal to
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-e
+e
-2e
2e
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Question # 6
Two up quarks and one down quarks makes a
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Proton
Newton
Photon
Meson
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Question # 7
James chadwick discovered:
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Proton
Positron
Neutron
Electron
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Question # 8
The number of Isotopes of cesium are.
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4
32
22
36
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Question # 9
The building blocks of protons and neutrons are called.
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Ions
Electrons
Positrons
quarks
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Question # 10
Electrons are
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Hadrons
Laptons
Quarks
Baryons
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Question # 11
The potential difference between the top and bottom of a cloud chamber is of the order of
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290 v
400 v
1 kv
None of above
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Question # 12
Rutherford performed on experiment on a nuclear reaction in:
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1921
1981
1927
1932
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Question # 13
Half life of Uranium -239 is
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26.5 minutes
24.5 minutes
25.5 minutes
23.5 minutes
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Question # 14
The most useful tracer is.
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Strontium -90
Iodine -31
Cobalt -60
Carbon -14
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Question # 15
Two down and one up quarks make
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Proton
Neutron
photon
Positron
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Question # 16
The Unit of decay constant.
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Second
(second)-1
m-1
mk
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Question # 17
Which one of the following is not affected by electric or magnetic field.
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Beta rays
Gama ryas
Alpha rays
Electron
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Question # 18
The particles which do not experience strong force are called.
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Baryons
Hadrons
Mesons
Laptons
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