Question # 1

The moderator used in a nuclear reactor

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Sodium

Uranium

Graphite

Cadmium

Cobalt -60 is the source for

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Alpha rays

Gama rays

Beta rays

Neutron

The radioactive decay obeys the law

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The SI unit of decay constant is

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m

m^-1

S^-1

Nm^-1

There is no charge in A and Z of any radioactive element by the emission of.

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Alpha particle

Beta particle

Gama particle

X- rays

The number of neutrons in Li are

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2

3

4

7

1 gray is equal to.

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1 JKg-1

1KgJ-1

1JKg

1 JKg-2

Circulation of blood is studied by radio isotope.

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Cobalt -60

Phosphorus -32

Sodium -24

Iodine -131

Two down and one up quarks make

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Proton

Neutron

~~photon~~

Positron

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

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

The charge on Beta particle is

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+e

-e

-2e

None of these

Hydrogen bomb is an example of.

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Nuclear fission

Nuclear fusion

Chain reaction

Chemical reaction

Cosmic rays consist of

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Protons

High energy photons

Positron

All of above

The binding energy for_________ is maximum.

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Copper

Glass

Iron

Aluminum

Materials can be identified by measuring their

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Mass

Half life

Both a and b

None of a,b,c

The mass of beta particle is equal to the mass

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Proton

Neutron

Electron

Photon

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Physics FSC Part 2 Chapter 21 Online MCQ's Test MCQs With Answers

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