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

00:00
Question # 1

Carbon monoxide is harmful to human beings as it

Question # 2

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

Question # 3

Water pollution is mainly due to

Question # 4

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

Question # 5

Eutrophication causes reduction in

Question # 6

Soil salinity can be measured by

Question # 7

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 8

Depletion of ozone layer is due to

Question # 9

Increasing skin cancer and high mutation rate are due to

Question # 10

BOD is

Question # 11

Polycyolic aromatic hydrocarbons are taught to be

Question # 12

Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called

Question # 13

Which factor is helping to reduce the environmental pollution

Question # 14

The normal amount of overhead ozone is about

Question # 15

To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be

Question # 16

Water which his considered to be safe for human consumption is known as

Question # 17

Ozone hole is maximum over

Question # 18

Domestic waste mostly constitutes

Question # 19

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

Question # 20

As it passes into food chain, the concentration of DDT

Question # 21

Which is not a method for solid waste management

Question # 22

Fungicides are the pesticides which

Question # 23

A single chlorine free radical can destroy how many ozone molecules

Question # 24

Chloroflurocarbon releases a chemical harmful to ozone

Question # 25

Oceans cove ______ percent of the surface of the earth

Question # 26

Burning of fossil fuels is the main source of pollution

Question # 27

In purification of potable water the coagulant used is

Question # 28

NO and NO2gases in atmosphere are represented by

Question # 29

Swage water is purified by

Question # 30

Chromium (VI) is highly toxic and can cause

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which heavy metals do not have any safe limits
A. As
B. Hg
C. Cr
D. All of these
2 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy
3 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone
4 Phosphate pollution is caused by
A. Weathering of phosphate rocks only
B. Agricultural fertilizers
C. Phosphate rocks and sewage
D. Sewage and agricultural fertilizers
5 Which of the following human activities are contaminating surface and ground waters
A. Pesticides
B. Septic tanks
C. Petroleum and natural gas production
D. All of these
6 Swage water is purified by
A. Microorganisms
B. Light
C. Fishes
D. Aquatic plants
7 DDT is
A. Biodegradable pollutant
B. Nondegradable pollutant
C. Not a pollutant
D. An antibiotic
8 Acid rain is due to increase in atmospheric concentration of
A. Ozone and dust
B. CO2and CO
C. SO3and CO
D. SO2and NO2
9 Domestic waste mostly constitutes
A. Non-biodegradable pollution
B. Biodegradable pollution
C. Effluents
D. Air pollution
10 Which gasses are produced from landfills
A. NH3
B. H2S
C. N2
D. All of these

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