Question # 1

Which gas produces air pollution?

Choose an answer

oxides of sulphur

oxides of carbon

all of these

The toxic organic compounds and heavy metals and metalloids results in contamination of

Choose an answer

surface water

ground water

both surface and ground water

neither surface nor ground waters

Which of the following waster material is not recycled for use again

Choose an answer

paper

plastic

hides of animals

glass

Leaching of nutrients is due to

Choose an answer

Drying of soil

Combustion of soil

Acidification of soil

Neutralization of soil

Primary pollutants are:

Choose an answer

oxides of sulphur

oxides of carbon

oxides of nitrogen

All of these

A chemist says that glass must be a super cooled liquid. the reason that he might have in his mind is that glass has:

Choose an answer

Definite shape

Definite volume

Crystalline structure

No crystalline structure

The main pollution of leather tanneries in the waste is due to the salt of

Choose an answer

Chromium

Copper

Chromium

Lead

One of the environmental problem is the formation of oil slicks when oil is spilled form tankers in sea water. Which treatment is suitable to remove oil slicks

Choose an answer

Blow air

Add Na₂CO₃

Use a specially made sorbent having fluorine trapped in it

Use a sorbent having Al₂O₃trapped in it

Which is the following is true about galvanic cell:

Choose an answer

Reduction occurs at cathode

Reduction occurs at anode

Anode is negatively charged

Chathode is positively charged

Which is not a component of environment?

Choose an answer

Biosphere

Lithosphere

Hydrosphere

None of these

Commonly used coagulants are ions of:

Choose an answer

Ferrous

Al

Cr

Ferric

The pH range of acid rain is?

Choose an answer

7-6.5

6.5-6

6-5.6

Less than 5

Ocean contains part earth's water:

Choose an answer

95%

96%

97%

98%

Diseases like dysentery, typhoid and hepatitis are caused by mixing of in water:

Choose an answer

Live stock wastes

Oil spilage

detergents

pesticides

The water is considered to be polluted when the concentration of oxygen in it is

Choose an answer

6 - 9ppm

6 ppm

8 ppm

Less than 4pm

Poisoning of CO can be reveresed by giving oxygen at pressure:

Choose an answer

low

least

medium

High

Alkali metals react viotlently with halogens:

Choose an answer

Halides

Anhydrides

Hydrides

None of the above

A single chloride free redical can destroy bow many ozene molecules?

Choose an answer

100

100000

10000

10

Which of the following is not the required condition for the formation of smog

Choose an answer

Sufficient NO

Sunlight

Less movement of air

Winds

Which is not an air pollutant

Choose an answer

N₂

CO

NO

N₂O

Choose the chief air pollutant among the following which depletes ozone layer

Choose an answer

Carbon monoxide

Carbon dioxide

Chloroflurocarbons and nitrogen oxides

Sulphur dioxide

Transportation causes to produce CO₂ in atmosphere:

Choose an answer

72%

73%

74%

75%

Ecosystem is a smaller unit of

Choose an answer

Hydrosphere

Lithosphere

Biosphere

Atmosphere

CFC's are known to cause depletion of ozone layer therefore their use has been banned in refrigerators and air conditioners. Which alternate compound may be suitable to replace CFC

Choose an answer

CCl₄

CHCl₃

CH₃- CH₂- CH₂- CH₃

CHCl₂- CHF₂

Surface and ground water sources are contaminated by various human activities. Which of the following is not a human activity that causes contamination in fresh water

Choose an answer

Rain

Live stock waste

Oil leaks and spills

Disposal of industrial effluents

Cyclone collector is used to reduce

Choose an answer

Noise pollution

Air pollution

Water pollution

Radioactive pollution

99.5% mass of lithosphere is made of

Choose an answer

03 elements

8 elements

11 elements

15 elements

Unit of ozone is?

Choose an answer

Debye

Dobson

Esu

Coulumb

The pH range of acid rain is?

Choose an answer

7-6.5

6.5-6

6-5.6

Less than 5

As the number of carbon atoms increase the number of isomers also increase. The six carbon compound hexane has as many as:

Choose an answer

10 isomers

3 isomers

5 isomers

6 isomers

In water the most important oxidizing agent is dissolved molecular oxygen which ranges form

Choose an answer

2 - 4 ppm

4 - 6 ppm

2 - 5 ppm

4 - 8 ppm

Detergent greatly effects the

Choose an answer

Aquatic life

Modern life

Terrestrial life

Plants life

The pH of the rain water in areas where acid rain is the cause of pollution may be

Choose an answer

6.5

5.6

4.5

2.2

Coagulation in the purification of water is carried out by

Choose an answer

Alum

NiSO₄

BaSO₄

CuSO₄

More Classes

Other Links

MDCAT Chemistry Chapter 22 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

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