Question # 1

99% of atmosphere consists of .

Choose an answer

N₂and H₂

N₂and O₂

N₂and CO₂

O₂and CO₂

Building are being damaged by acid rain because it attacks.

Choose an answer

Calcium sulphate

Calcium nitrate

Calcium carbonate

Calcium oxalate

Which gas saves the surface of earth from ultra violet radiation?

Choose an answer

CO₂

CO

N₂

O₃

High concentration of which metal clogs the fish gills.

Choose an answer

Zinc

Aluminium

Sodium

Copper

Just above the Earth's surface is

Choose an answer

Mesosphere

Stratosphere

Theremosphere

Troposphere

The percentage of SO₂released by the combustion of coal and petroleum product.

Choose an answer

40%

60%

70%

80%

Infrared radiations emitted by the Earth are absorbed by.

Choose an answer

CO₂ and H₂O

N₂ and O₂

CO₂and N₂

O₂and CO₂

Infrared radiation emitted by the earth are absorbed by?

Choose an answer

CO₂,H₂O

N₂,O₂

CO₂,N₂

O₂,CO₂

The green house effect is proportional to the amount of which gas in air.

Choose an answer

CO₂

O₂

N₂

All of them

Forest fires and burning of wood emit.

Choose an answer

CO₂

NO₂

SO₂

Cl₂

Ozone depletion was first noticed is.

Choose an answer

1970's

1980's

1990's

1960's

Ozone is beneficial for us as it absorbs.....................

Choose an answer

Infrared Radiations

Ultraviolet radiations

Chlorofluorocarbons

Air pollutants

Effects of ozone depletion are following except the one.

Choose an answer

Increases infectious diseases

Increases crops production

Can cause skin cancer

Can cause climatic changes.

More Classes

Other Links

Chemistry 10th Class English Medium Unit 14 Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer