Question # 1

Materials can be identified by measuring their

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Mass

Half life

Both a and b

None of a,b,c

Both Xenon and cesium have

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33 isotopes

34 Isotopes

36 Isotopes

35 Isotopes

The dead time of G.M tube is.

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10^-1 sec

10^-6sec

10^-4sec

10^-8sec

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

Energy needed to produce an electron hole in solid state detector is.

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1 to 2 eV

3 to 4 eV

6 to 7 eV

8 to 9 eV

Controlling rods inserted into the reactor are of metal:

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Aluminium

Cadmium

Magnesium

Copper

Circulation of blood is studied by radio isotope.

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Cobalt -60

Phosphorus -32

Sodium -24

Iodine -131

When gama rays are emitted, the nuclear mass.

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Decreases by 4 units

Does not change

Increases by 2 units

Increase by 1 unit

The mass spectrum of naturally occurring neon, showing

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1 isotope

2 isotope

3 isotope

4 isotope

The moderator used in a nuclear reactor

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Sodium

Uranium

Graphite

Cadmium

Hydrogen bomb is an example of.

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Nuclear fission

Nuclear fusion

Chain reaction

Chemical reaction

The number of protons in any atom are always equal to the number of

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Neutrons

Electrons

Positrons

Mesoris

Subatomic particles are divided into groups.

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Photon

Laptons

Hadrons

All 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 types of quacks are.

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2

3

4

6

Charge on an electron was determined by

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Ampere

Millikan

Maxwell

Bohr

The place for soring the nuclear waste is

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Ocean

Damping in earth

Damping in desert

Bottom of old salt mines

Which one belongs to lepton's group

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Electron

Muons

Neutrons

All of these

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

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