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

In purification of potable water the coagulant used is

Question # 2

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

Question # 3

SO2Makes ______ acid rains

Question # 4

Phosphate pollution is caused by

Question # 5

DDT is

Question # 6

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

Question # 7

Pollution is

Question # 8

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

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

Increasing skin cancer and high mutation rate are due to

Question # 11

A pollutant affects

Question # 12

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

Question # 13

Atomospheric pollutant is

Question # 14

Ultraviolet radiation from sun causes a reaction that produces

Question # 15

Industrial effuents have toxic synthetic organic compounds as well as heavy metals like

Question # 16

The largest item which is recycled is

Question # 17

Most hazardous metal pollutant of automobile exhaust is

Question # 18

UV radiations bring about

Question # 19

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

Question # 20

Minamata disease is due to pollution of

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

Mottling of teeth is due to presence of an element in drinking water

Question # 23

The pH range of the acid rain is

Question # 24

When rain is accompanied by a thunderstorm, the collected rain water will have a pH value

Question # 25

Which is not a component of environment

Question # 26

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

Question # 27

Chief air pollutant which is likely to deplete ozone layer

Question # 28

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

Question # 29

Chief source of water and soil pollution is

Question # 30

Potable water is considered to be

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Environmental pollution affects
A. Biotic components
B. Plants only
C. Man only
D. Biotic and abiotic components of environment
2 Ecosystem is a smaller unit of
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
3 Which one is not a pollutant normally?
A. Hydrocarbons
B. Carbon dioxide
C. Carbon monoxide
D. Sulphur dioxide
4 The normal amount of overhead ozone is about
A. 250 Du
B. 300 DU
C. 350 DU
D. 400 DU
5 Spraying of DDT produces pollution of
A. Air
B. Air and water
C. Air and soil
D. Air, water and soil
6 Mottling of teeth is due to presence of an element in drinking water
A. Mercury
B. Fluorine
C. Boron
D. Chlorine
7 B.O.D is connected with
A. Organic matter
B. Microbes
C. Mircrobes and organic matter
D. None of the above
8 Which factor is helping to reduce the environmental pollution
A. Rapid growth of population
B. Urbanization
C. Industrialization
D. Increase of plantation
9 Chloroflurocarbon releases a chemical harmful to ozone
A. Fluorine
B. Chlorine
C. Nitrogen peroxide
D. Sulphure dioxdie
10 Classical smog occurs in palces of
A. Excess SO2
B. Low temperature
C. High temperature
D. Excess NH3

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