Question # 1

Any change in he environment which is harmful for living things is called.

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Pollution

Pollutant

disease

Fithy

Oposite charges ........ each other.

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Attract

Repel

Hot

Not effected

Sterilized gause is used

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For chekcing blood pressure

As bandage on wound

For cleaning workplace

For finding the body temperature

Which object reflect maximum light.

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White paper

Coloured paper

Mirror

Brick wall

Sound is a type of energy.

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Electrical

Mechanical

Thermal

Chemical

NASA launced a space station called skylab on .

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May 12 , 1973

May 14, 1973

May 15, 1973

May 16 , 1973

The change that occured on the irion due toaction of oxygen and water is called.

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Burning

Decaying

Rusting

Melting

First piece of the international space station in launched.

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October 20, 1998

September 20, 1998

November 20, 1998

December 20, 1998

The maximum amount of electric currentthat a fuse can pass through is called.

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Limit

Amout

Rating

Strength

Soviet Cosmonaut Yuri Gagarin becomes the first human to enter space and return safely.

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April 12, 1961

April 12, 1962

April 12, 1963

April 10, 1961

what is the cause of the polio disease?

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Protozoa

Virus

Fungi

Becterai

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