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

Exposure to CO results in

Question # 2

Environmental pollution affects

Question # 3

What is the cause of water pollution

Question # 4

Pollution is

Question # 5

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

Question # 6

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

Question # 7

Photochemical smog is caused by

Question # 8

Which step is unnecessary for purification of water for drinking purposes

Question # 9

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

Question # 10

The % of CO2is the atmosphere is

Question # 11

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

Question # 12

Ozone in most of the tropical regions acts as a pollutant and causes

Question # 13

Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water

Question # 14

Phosphate pollution is caused by

Question # 15

Ozone hole is maximum over

Question # 16

Soil remediation means

Question # 17

Chief air pollutant which is likely to deplete ozone layer

Question # 18

Which gasses are produced from landfills

Question # 19

BOD is

Question # 20

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

Question # 21

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 # 22

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

Question # 23

In the atmosphere, O2is about

Question # 24

Which of the following is not an air

Question # 25

Which one of the following is not air pollutant gas

Question # 26

Drawback DDT as presticide is

Question # 27

UV radiations bring about

Question # 28

Atomospheric pollutant is

Question # 29

Pollutant of automobile exhausts that affects nervous system/produces mental diseases is

Question # 30

Which is not the affect of polluted air on environment

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?
A. Fullerences
B. Freons
C. Polyhalogens
D. Ferrocene
2 Chloroflurocarbon releases a chemical harmful to ozone
A. Fluorine
B. Chlorine
C. Nitrogen peroxide
D. Sulphure dioxdie
3 The pH of the rain water in areas where acid rain is the cause of pollution may be
A. 6.5
B. 5.6
C. 4.5
D. 2.2
4 In the atmosphere, O2is about
A. 10%
B. 15%
C. 21%
D. 25%
5 Water which his considered to be safe for human consumption is known as
A. Distilled water
B. Contaminated water
C. Potable water
D. Rain water
6 The amount of Si in the lithosphere is about
A. 27.72%
B. 30.35%
C. 35.30%
D. 40.21%
7 The film forming components of paints are
A. Resins
B. Thinners
C. Pigments
D. Driers
8 SO2and NO2produce pollution by increasing
A. Alkalinity
B. Acidity
C. Neutrality
D. Buffer action
9 Soil salinity can be measured by
A. Calorimeter
B. Potometer
C. Porometer
D. Conducitvity meter
10 The region of earth capable of supporting life is
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere

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