Question # 1

Which pair belongs to hadrons.

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Protons and Neutrons

Neutrons and electrons

Photons and electrons

positrons and electrons

The place for soring the nuclear waste is

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Ocean

Damping in earth

Damping in desert

Bottom of old salt mines

The moderator used in a nuclear reactor

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Sodium

Uranium

Graphite

Cadmium

Gamma rays from cobalt -60 are used for treatment of.

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Circulation of blood

Cancer

Heart Attack

Thyroid glands

Absorbed Dose 'D' is defined as

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m/E

E/C

C/m

E/m

Controlling rods inserted into the reactor are of metal:

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Aluminium

Cadmium

Magnesium

Copper

The mass of proton in amu is:

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1.07276

1.7276

1.007276

1.0007276

The energy of photon for photoelectric effect is less than

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1 MeV

2 MeV

5 MeV

8 MeV

Energy released by conversion of 1 amu is

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200 MeV

931 MeV

233 MeV

243 MeV

Unit of decay constantλ is:

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ms

m^-1

m

S^-1

How many neutrons are there in the nuclide Zn⁶⁶?

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22

30

36

66

The force which is responsible for the breaking up of the radioactive element is.

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Weak nuclear force

Strong nuclear force

Electromagnetic force

Gravitational force

The energy equivalent of 1 kg of matter is about:

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10^-15 J

1 J

10^-12J

10^-17J

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

The quantity of U in the naturally occurring uranium is.

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0.2%

0.3%

0.7%

0.4%

Unit of decay constantλ is:

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ms

m^-1

m

S^-1

When a nucleus emits alpha particle its atomic mass decreases by

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1

2

3

4

Marie Curie and Pierre Curie discovered.

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Uranium

Uranium and Radium

Polonium and radium

Radium

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