Question # 1

man landed on the moon for the first time in:

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July 20, 1979

July 20, 1976

July 20 ,1969

July 20, 1970

America launched its first space station in to space.

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Apallo -1

Skylab -1

Both a and b

None

Which of the following is used as fuel in Rocket:

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liquid gas

liquid carbon dioxide

liquid ammonia

Ll of the above

The Country which launched space station Mir into space:

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France

British

America

Russia

The cause of thermal pollution;

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only green house effect

only nuclear reactors

only fossil fuels

All , A, B and C

The conductors having larges resistance are called:

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Fuses

Switches

Resistors

Capacitors

The examples of semi - conductors:

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sodium and potassium

calcium and potassium

Germanium and silicon

carbon and nitrogen

Cause of air pollution is.

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Carbon Monoxide

Sulphur di oxide

Nitrogen oxide

All of them

The working principle of transformer:

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Electromagnetic conduction

Electrostatic induction

Electric charge

Neutralization

Russia launched its first artificial satellite into space in:

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October 25,1950

October 4, 1957

October 10, 1969

February 25, 1963

in binary system. 37 is written as.

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101101

100101

110011

101011

The frequency of the carrier waver used of radio transmission:

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30 KHZ

40 KHZ

50 KHZ

60 KHZ

A device that decreases or increases the A.C voltage:

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Transformer

Ammeter

Voltmeter

Fuse

The unit of current in System International is.

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Ampere

Volt

Ohm

Newton

Which disk consisting of metal plates for recording.

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Floopy

RAM

HARD

CD

What discovered radioactivity?

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Einstein

Newton

J.J. Thomson

Henry Becquerel

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