Question # 1

Which of the following is an neutral particle?

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Electron

Proton

Neutron

Alpha particle

The SI unit of resistence.

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Ampere

Volt

Hertz

Ohm

By burning fossil fuels we get.

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Solar power

Tidal power

Nuclear power

Thermal power

The country, whihc launched its artificial satellite into space for the first time is.

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America

France

Russia

Pakistan

The potential of the neutral wire is.

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Zero

+220 volts

220 volts

Changing

How many electrons Guns are used in colour T.V?

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One

Two

Three

Four

Sunlight is directly transformed to electricity with the help of:

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Solar cells

Diod

Rectifier

Transistor

The device used for turning a circuit ON or OFF is.

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Switch

Fuse

Circuit breaker

Earth wire

The largest source of light is.

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Sun

Moon

Stars

Plants

The production capacity of research reactor PARR - I is:

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10 megawatt

15 megawatt

20 megawatt

25 megawatt

Revolutionary charges have occur in last ............. years.

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30

40

50

60

The deficiency of elctrons in outermost shell of silicon atom is called.

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Valent shell hole

Doping

Hole

None of these

The working principle of transformer:

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Electromagnetic conduction

Electrostatic induction

Electric charge

Neutralization

What discovered radioactivity?

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Einstein

Newton

J.J. Thomson

Henry Becquerel

The energy due to motion is called.

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Potential energy

Kinetic energy

Nuclear energy

Chemical energy

The cause of thermal pollution;

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only green house effect

only nuclear reactors

only fossil fuels

All , A, B and C

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