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

Swage water is purified by

Question # 2

Cyclone collector is used for minimizing

Question # 3

NO and NO2gases in atmosphere are represented by

Question # 4

Ecology is a science of environment and deals specially with

Question # 5

What is the cause of water pollution

Question # 6

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

Question # 7

Biodegradable pollutant is

Question # 8

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

Question # 9

Ultraviolet radiation from sun causes a reaction that produces

Question # 10

DDT is

Question # 11

Water pollution is mainly due to

Question # 12

Air pollution is not caused by

Question # 13

Which step is unnecessary for purification of water for drinking purposes

Question # 14

Chloroflurocarbon releases a chemical harmful to ozone

Question # 15

Ozone depletion in stratosphere shall result in

Question # 16

Carbon monoxide is pollutant as it

Question # 17

Chromium (VI) is highly toxic and can cause

Question # 18

Which heavy metals do not have any safe limits

Question # 19

Sulphur dioxide affects

Question # 20

In purification of potable water the coagulant used is

Question # 21

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 # 22

The largest item which is recycled is

Question # 23

Acid rains are produced by

Question # 24

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

Question # 25

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

Question # 26

Which one of the following is not air pollutant gas

Question # 27

Which is not the affect of polluted air on environment

Question # 28

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

Question # 29

Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?

Question # 30

Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Ecology is a science of environment and deals specially with
A. Stratosphere
B. Biosphere
C. Lithosphere
D. Hydrosphere
2 Ozone in most of the tropical regions acts as a pollutant and causes
A. Damages to eyes
B. Aggravates asthma
C. Chest discomfort
D. All of these
3 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy
4 Atmosphere of big/metropolitan cities is polluted most by
A. Automobile exhausts
B. Pesticide residue
C. Household waste
D. Radio-active fall out
5 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
6 Water pollution is mainly due to
A. Sulphure dioxide
B. Carbon dioxide
C. Oxygen
D. Industrial discharges
7 The amount of oxygen in the lithosphere is about
A. 35.50%
B. 40.60%
C. 56.60%
D. 50.50%
8 Which heavy metals do not have any safe limits
A. As
B. Hg
C. Cr
D. All of these
9 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
A. Blow air
B. Add Na2CO3
C. Use a specially made sorbent having flouring trapped in it
D. Use a sorbent having Al2O3trapped in it
10 Most hazardous metal pollutant of automobile exhaust is
A. Mercury
B. Lead
C. Cadmium
D. Copper

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