ECAT Pre Engineering Chemistry Chapter 27 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 27 Environmental Chemistry

Try The MCQ's Test For ECAT Chemistry Chapter 27 Environmental Chemistry

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ECAT Chemistry Chapter 27 Environmental Chemistry

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Question # 1

Potable water is considered to be

Question # 2

A pollutant affects

Question # 3

When chlorofluoro carbon are subjected to U.V. they form

Question # 4

As it passes into food chain, the concentration of DDT

Question # 5

Result of ozone hole is

Question # 6

Which is not a component of environment

Question # 7

Water is often treated with chlorine to

Question # 8

Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic

Question # 9

Ultraviolet radiation from sun causes a reaction that produces

Question # 10

Which one is the most toxic?

Question # 11

Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due

Question # 12

Water pollution is mainly due to

Question # 13

In the atmosphere, O2is about

Question # 14

Depletion of ozone layer is due to

Question # 15

Fungicides are the pesticides which

Question # 16

In the atmosphere, CO2is about

Question # 17

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 18

Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as

Question # 19

The % of CO2is the atmosphere is

Question # 20

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

Question # 21

Ecology is a science of environment and deals specially with

Question # 22

Mottling of teeth is due to presence of an element in drinking water

Question # 23

Chloroflurocarbon releases a chemical harmful to ozone

Question # 24

Which is not the condition for the formation of smog

Question # 25

Which of the following forms a toxic substance in blood by combing with hemoglobin?

Question # 26

The 95.5% mass of Lithosphone is made of 11 elements i.e. O2, Si, Al, Fe, Ca, Na, K, Mg, Ti, H2and P. which element is present in trace amount

Question # 27

Biodegradable pollutant is

Question # 28

Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution

Question # 29

Ozone hole is maximum over

Question # 30

NO and NO2gases in atmosphere are represented by

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Pollutant of automobile exhausts that affects nervous system/produces mental diseases is
A. Mercury
B. Lead
C. Nitrogen oxide
D. Sulphuric oxide
2 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone
3 Soil salinity can be measured by
A. Calorimeter
B. Potometer
C. Porometer
D. Conducitvity meter
4 Drained sewage has B.O.D
A. More than that of water
B. Less than that of water
C. Equal to that of water
D. None of the above
5 Which factor is helping to reduce the environmental pollution
A. Rapid growth of population
B. Urbanization
C. Industrialization
D. Increase of plantation
6 Ozone layer of stratosphere requires protection from indiscriminate use of
A. Fungicides, insecticides, bactericides and medicines
B. Aerosols and high flying jets
C. Atomic explosions and industrial wastes
D. Baloons and turbo-prop aeroplanes
7 Carbon monoxide is pollutant as it
A. Inactivates nerves
B. Inhibits glycolysis
C. Combines with oxygen
D. Combines with hemoglobin
8 Atmosphere of big/metropolitan cities is polluted most by
A. Automobile exhausts
B. Pesticide residue
C. Household waste
D. Radio-active fall out
9 Fungicides are the pesticides which
A. Control the growth of fungus
B. Kill insects
C. Kill plants
D. Kill herbs
10 Increasing skin cancer and high mutation rate are due to
A. Acid rain
B. Ozone depletion
C. CO pollution
D. CO2Pollution

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