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

NO and NO2gases in atmosphere are represented by

Question # 2

Acid rain is due to increase in atmospheric concentration of

Question # 3

Water pollution is mainly due to

Question # 4

Air pollution is not caused by

Question # 5

Which one is the most toxic?

Question # 6

SO2and NO2produce pollution by increasing

Question # 7

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 # 8

Sulphur dioxide affects

Question # 9

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 # 10

Which one of the following is not air pollutant gas

Question # 11

Water is often treated with chlorine to

Question # 12

Ecosystem is a smaller unit of

Question # 13

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 # 14

Chromium (VI) is highly toxic and can cause

Question # 15

Which heavy metals do not have any safe limits

Question # 16

Ozone hole refers to

Question # 17

As it passes into food chain, the concentration of DDT

Question # 18

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

Question # 19

Burning of fossil fuels is the main source of pollution

Question # 20

The % of CO2is the atmosphere is

Question # 21

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

Question # 22

Oceans cove ______ percent of the surface of the earth

Question # 23

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

Question # 24

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

Question # 25

B.O.D is connected with

Question # 26

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

Question # 27

In incinerating the waste is burnt at

Question # 28

Soil salinity can be measured by

Question # 29

Chromium (VI) is highly toxic and can cause

Question # 30

UV radiations bring about

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 SO2Makes ______ acid rains
A. Carbonic acid
B. Sulfuric
C. Nitric acid
D. All of these
2 Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?
A. Ozone
B. Nitrous oxide
C. Sulphure dioxide
D. Carbon monoxide
3 The normal amount of overhead ozone is about
A. 250 Du
B. 300 DU
C. 350 DU
D. 400 DU
4 Which one is the major reason for pollution in high cities?
A. Fossil fuel
B. Acid rain
C. Heat dispersion
D. None of the above
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 In purification of potable water the coagulant used is
A. Nickle sulpahte
B. Copper sulpahte
C. Barium sulpahte
D. Alum
7 Fungicides are the pesticides which
A. Control the growth of fungus
B. Kill insects
C. Kill plants
D. Kill herbs
8 When chlorofluoro carbon are subjected to U.V. they form
A. Cations
B. Anions
C. Free radicals
D. None of these
9 Which of the following forms a toxic substance in blood by combing with hemoglobin?
A. Carbon dioxide
B. Carbon monoxide
C. Oxygen
D. Methane
10 Which one is not a pollutant normally?
A. Hydrocarbons
B. Carbon dioxide
C. Carbon monoxide
D. Sulphur dioxide

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