Question # 1

Which one of these in non-biodegradable

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Feathers

Paper

Leaves of plants

Polythene bag

Electric current is the flow of.

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Energy

Light

Charge

Atoms

The helps in observation of microorganism

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Eyes

Convex lens

Light microscope

Microscope

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

Which of the following sounds is called noise.

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Sound of a flute

Rusting of leaves

Pressure horn

Chirping of birds

The distance of earth from sun is approx

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160 million kilometer

150 million kilometer

140 million kilometer

170 million kilometer

What type of change is it when mtal expand on heating.

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Permanent

Chemical

Physical

Temporary

The flame develope during combustion reaction is called.

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Decaying

Burning

Rusting

Melting

Which group of organisms are found every where on earth.

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Algae

Bacteria

Fungi

Plants

How long does it take for a geo-stationary satellite to complete one orbit?

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One day (24 Hours)

One week

One month

One year

The light from the sun reaches on the earth

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5 min

8 min

10 min

15 min

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