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

Which causes water pollution?

Question # 2

Depletion of ozone layer is due to

Question # 3

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

Question # 4

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

Question # 5

Chief air pollutant which is likely to deplete ozone layer

Question # 6

Ecology is a science of environment and deals specially with

Question # 7

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

Question # 8

In incinerating the waste is burnt at

Question # 9

UV radiations bring about

Question # 10

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

Question # 11

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 # 12

Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone

Question # 13

Acid rains are produced by

Question # 14

Fungicides are the pesticides which

Question # 15

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

Question # 16

BOD is

Question # 17

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

Question # 18

Sulphur dioxide affects

Question # 19

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 # 20

Carbon monoxide is harmful to human beings as it

Question # 21

Burning of fossil fuels is the main source of pollution

Question # 22

Atmosphere of big/metropolitan cities is polluted most by

Question # 23

The largest item which is recycled is

Question # 24

Most hazardous metal pollutant of automobile exhaust is

Question # 25

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

Question # 26

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

Question # 27

Chromium (VI) is highly toxic and can cause

Question # 28

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

Question # 29

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

Question # 30

Atomospheric pollutant is

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 UV radiations bring about
A. Skin cancer
B. Mouth cancer
C. Lung cancer
D. Liver cancer
2 The % of CO2is the atmosphere is
A. 3.0%
B. 0.03%
C. 0.3%
D. 0.5%
3 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
4 Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone
5 Cyclone collector is used for minimizing
A. Radioactive pollution
B. Air pollution
C. Noise pollution
D. Water pollution
6 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy
7 BOD is
A. Biological oxygen deficit
B. Biosphere oxygen demand
C. Biological oxygen demand
D. None of the above
8 Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution
A. Live stock waste
B. Agricultural pesticides
C. Oil breaks and spills
D. All of the above
9 Soil remediation means
A. To make it suitable for cultivation of crops
B. To make it acidic
C. To make it alkeline
D. To add manure into it
10 Industrial effuents have toxic synthetic organic compounds as well as heavy metals like
A. Pb
B. Cr
C. Hg
D. All of these

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