Question # 1

Detergent greatly effects the

Choose an answer

Aquatic life

Modern life

Terrestrial life

Plants life

CFCs are mainly used in industries due to

Choose an answer

Low cost

Gaseous nature

High reactivity

Un stability

CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy

Choose an answer

10,000

20,000

100,000

50,000

Region of earth capable of supporting life is called:

Choose an answer

Atmosphere

Hydrosphere

Lithosphere

All of these

Water is purified by:

Choose an answer

Filtration

aeration

coagualation

All of these

Ozone is an allotropic form of:

Choose an answer

Carbon

Phosphorus

Oxygen

Sulfur

Which is property of CO?

Choose an answer

Soluble in water

Insoluble in water

No toxic

Pole coloured

Which of the following human activities are contaminating surface and ground waters?

Choose an answer

pesticides

septic ranks

petroleum and natural gas production

all of these

Which of the following does not contribute towards the formation of photochemical smog?

Choose an answer

NO

SO₂

O₃

Hydrocarbons

Proxy acetyl nitrate (PAN) is an irritant to human beings and it affect

Choose an answer

Nose

Stomach

Eyes

Ears

Depletion of ozone is more during the month:

Choose an answer

Jan-March

April-Jun

July-Aug

Sept-Nov

Which of the following is not a secondary pollutant

Choose an answer

Ozone

Carbonic acid

Sulphuric acid

Carbon dioxide

The amount of oxygen in the lithosphere is about

Choose an answer

35.50%

40.60%

46.60%

50.50%

Which step is unnecessary for purification of water for drinking purposes

Choose an answer

aeration

coagulation

treatment with chlorine

treatment with iodine

The words smog is a combination of smoke and:

Choose an answer

fog

foke

fork

fizzy

Boron, aluminium, gallium, indium and thallium belong to group lll-A of the periodic table show a decrease with increasing relative atomic mass:

Choose an answer

Ionic character of the compounds

The first ionization energy

The basic character of the oxides

The stability of +2 oxidation

Which not a method for solid waste management>

Choose an answer

Landfill

Incinerating

Recycling

None of these

When chlorofluoro carbon are subjected to U.V they form

Choose an answer

Cations

Aninons

Free radicals

None of these

Primary pollutants are:

Choose an answer

oxides of sulphur

oxides of carbon

oxides of nitrogen

All of these

Coal contains percentage of sulphur:

Choose an answer

1-9%

5-9%

6-9%

7-9%

In big/metropolitan cities, atmosphere is mostly polluted due to

Choose an answer

Radioactive fall out

Household waste

Pesticide residue

Automobile exhausts

More Classes

Other Links

MDCAT Chemistry Chapter 21 Environmental Chemistry 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

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer