Question # 1

In term of volume, largest part of the earth.

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Crust

Mantle

Core

External core

The flame develope during combustion reaction is called.

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Decaying

Burning

Rusting

Melting

The first artificial satellite was sent into space in.

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1945

1957

1969

1973

The male gamete and female gemets fuse to form the

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embryo

Zygote

ovary

Filament

Only plant of solar system whreconditions are conductive for the eistence of life that is.

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Mercury

Venus

Earth

Mars

The speed of sound through Iron.

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340 meter per second

1500 meter per second

5000 meter per second

500 meter per second

Neil Armstrong became the firs man to walk on the Moon in Appollo-11 mission

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Jun 19, 1967

July 20, 1968

July 20, 1969

July, 25, 1969

The germs whihc cause typhoid.

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Fertilizer

Sewerage water

Factories substances

Insecticides

Agricultural and poisosous substances of factories are also the cause of.

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Air pollution

Environmental pollution

Land pollution

Water pollution

The microorganisms that cause diseases are called.

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Pathogen

Harmful insects

Microorganism

Beneficial insects

The distance of earth from sun is approx

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160 million kilometer

150 million kilometer

140 million kilometer

170 million kilometer

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