Question # 1

Ozone id beneficial for us as it:

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absorbs infrared radiations

absorbs ultraviolet radiation

absorbs chlorofluorocarbons

absorbs air pollutants

The smell of photocopies machine is due to the presence of.

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Chlorine gas

Neon gas

Helium gas

Ozone gas.

Building and Monuments lose their beauty and shine due to

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U.V radiations

Chlorofluoro carbons

Acid rain

IR radiations.

Acid rain damages the building it is due to reaction on.

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Calcium sulphate

Calcium nitrate

Calcium carbonate

Calcium oxilat

Atmosphere has regions.

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One

Two

Three

Four

The envelope of different gases around the earth is called.

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Atmosphere

Brosphere

Lithosphere

Hydrosphere

About 99% atmosphere's lies within:

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30 kilometre

35 kilometre

15kilometre

11 kilometre

75% atmosphere mass lies in how many kilometers.

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11 km

30 km

50 km

85 km

About 99% of atmospheric mass lies in.

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35 km

30 km

15 km

16 km

Ozone is beneficial for us as it

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Absorb infrared radiation.

Absorb Ultraviolet radiations.

Absorb Chlorofluorocarbons

Absorb Air pollulant

The gas use by plants to perform photosynthesis.

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O₂

CO₂

N₂

CO

Infrared radiation emitted by the earth are absorbed by?

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CO₂,H₂O

N₂,O₂

CO₂,N₂

O₂,CO₂

Incinerator reduces solid waste into .

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Ash

Flue gas

Heat

All of them

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