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

A single chlorine free radical can destroy how many ozone molecules

Question # 2

Atomospheric pollutant is

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

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 # 7

In the atmosphere, O2is about

Question # 8

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

Question # 9

Photochemical smog is caused by

Question # 10

Which step is unnecessary for purification of water for drinking purposes

Question # 11

UV radiations bring about

Question # 12

The film forming components of paints are

Question # 13

Most hazardous metal pollutant of automobile exhaust is

Question # 14

Which one is the most toxic?

Question # 15

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

Question # 16

Domestic waste mostly constitutes

Question # 17

BOD is

Question # 18

Which heavy metals do not have any safe limits

Question # 19

Phosphate pollution is caused by

Question # 20

Pollution is

Question # 21

Chromium (VI) is highly toxic and can cause

Question # 22

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

Question # 23

Chief source of water and soil pollution is

Question # 24

Minamata disease is due to pollution of

Question # 25

Which is not a component of environment

Question # 26

Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water

Question # 27

Increased asthmatic attacks in certain seasons are related to

Question # 28

Carbon monoxide is pollutant as it

Question # 29

Spraying of DDT produces pollution of

Question # 30

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

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which of the following is not an air
A. N2
B. N2O
C. NO
D. CO
2 Exposure to CO results in
A. Headache
B. Fatigue
C. Unconsciousness
D. All of these
3 Which gasses are produced from landfills
A. NH3
B. H2S
C. N2
D. All of these
4 Industrial effuents have toxic synthetic organic compounds as well as heavy metals like
A. Pb
B. Cr
C. Hg
D. All of these
5 Environmental pollution affects
A. Biotic components
B. Plants only
C. Man only
D. Biotic and abiotic components of environment
6 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone
7 Chloroflurocarbon releases a chemical harmful to ozone
A. Fluorine
B. Chlorine
C. Nitrogen peroxide
D. Sulphure dioxdie
8 Burning of fossil fuels is the main source of pollution
A. Nitrogen oxide
B. Nitric oxide
C. Nitrous oxide
D. Sulphur dioxide
9 Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called
A. Primary pollutant
B. Secondary pollutant
C. Tertiary pollutant
D. None of these
10 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems

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