Question # 1

Which of the following is typical source of alpha particle.

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Strontium -94

Radon -222

Cobalt -60

Zic sulphate

X -rays are similar in nature to.

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Gama rays

Beta rays

Alpha rays

Cathode rays

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

The building blocks of protons and neutrons are called.

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Ions

Electrons

Positrons

quarks

Which is true for both alpha particle and gama rays.

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They cause ionization in air

They can be deflected by electric field

They can be deflected by magnetic field

The y can penetrate a few millimeters of aluminium

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

Controlling rods inserted into the reactor are of metal:

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Aluminium

Cadmium

Magnesium

Copper

How many neutrons are there in the nuclide Zn⁶⁶?

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22

30

36

66

1 amu is equal to

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1.0606 x 10^-27 kg

1.66 x 10^-31 kg

1.66 x 10^-34 kg

1.66 x 10^-19 kg

Which one belongs to lepton's group

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Electron

Muons

Neutrons

All of these

The energy equivalent of 1 kg of matter is about:

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10^-15 J

1 J

10^-12J

10^-17J

Radioactivity happen due to the disintegration of

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Nucleus

Mass

Electrons

Protons

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

The charge number of Ba is.

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197

141

56

85

The most abundant isotope of neon is:

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Neon 21

Neon 20

Neon 22

None of above

The mass spectrum of naturally occurring neon shows the most abundant isotope has atomic mass.

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19

20

21

22

Materials can be identified by measuring their

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Mass

Half life

Both a and b

None of a,b,c

GM counter uses

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Alcohol only

Bromine

argon

Neon and bromine

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