Question # 1

PAN stands for

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Poly aniline nitrate

Proxy acetyl nitrate

Poly acetyl nitrite

Proxy acetyl nitrite

Almost all aircrafts fly in:

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troposphere

mesosphere

stratosphere

themosphere

The gas used by animals to perform respiration.

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O₂

N₂

SO₂

Cl₂

Effects of ozone depletion are following except the one.

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Increases infectious diseases

Increases crops production

Can cause skin cancer

Can cause climatic changes.

The pH of water containing CO₂ is

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4-6

5.6-6

6-7

7-8

Which gas is emitted due to volcanic eruption?

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CO₂

SO₃

NO₂

H₂

Which metal present in acid rain affect the aquatic life by clogging fish gills?

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Lead

Chromium

Aluminium

Mercury

A strange bitter smell noticed near photo copier machine is of.

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H₂S

SO₂

O₂

O₃

On which base atmosphere is divided into four regions?

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Change in pressure

Change in rediation

Change in temperature

Change in volume

Which one of the following gas has greater retaining capacity?

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O₂

N₂

CO

CO₂

Ozone depletion was first noticed is.

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1970's

1980's

1990's

1960's

Cause of global warming is :

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CO₂ gas

SO₂gas

NO₂gas

O₂gas

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