Question # 1

There are ......... types of reflection

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2

3

4

5

What is true formula.

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Densit = Mass x volume

Density = Mass/volume

Volume =Mass x volume

Density = volume/Mass

Ne belongs to

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Nitrogen family

Fluorine family

Noble gases

Alkaline earth metals

Ozone is a layer of gases in ............. atmosphere of the Earth.

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Upper

Lower

Middle

Inner

The basic physical and functional unit of heredity is called.

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DNA

RNA

Centronere

Gene

In nerve impulse in created in.

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Sensory neron

Spinal cord

PNS

CNS

Speed of light through glass is about.

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300000 km /s

250000 km/s

225000 km /s

200000 km/s

Law of conservation of mass put forward in.

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1783

1784

1785

1786

Number of elements in short period is.

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2

8

16

32

Speed of light through air is about.

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300000 km/s

250000 km/s

225000 km /s

200000 km /s

Hubble telescope launched in space.

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1990

1991

1992

1993

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