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

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

Question # 3

DDT is

Question # 4

Exposure to CO results in

Question # 5

Drained sewage has B.O.D

Question # 6

Which factor is helping to reduce the environmental pollution

Question # 7

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

Question # 8

Which one is not a pollutant normally?

Question # 9

Swage water is purified by

Question # 10

Shahi Qilla may be destroyed by

Question # 11

Water pollution is mainly due to

Question # 12

Which gas is not a constituent of atmosphere

Question # 13

Most hazardous metal pollutant of automobile exhaust is

Question # 14

Depletion of ozone layer is due to

Question # 15

A single chlorine free radical can destroy how many ozone molecules

Question # 16

Pick up the correct statement

Question # 17

The pH of the rain water in areas where acid rain is the cause of pollution may be

Question # 18

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 # 19

Which of the following waste material is not recycled for use again

Question # 20

Potable water is considered to be

Question # 21

Soil remediation means

Question # 22

The % of CO2is the atmosphere is

Question # 23

Ozone hole is maximum over

Question # 24

Atomospheric pollutant is

Question # 25

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

Question # 26

SO2Makes ______ acid rains

Question # 27

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

Question # 28

B.O.D is connected with

Question # 29

Which heavy metals do not have any safe limits

Question # 30

The amount of oxygen in the lithosphere is about

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 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
2 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
A. Live stock waste
B. Oil leaks and spills
C. Disposal of industrial effluents
D. Rain
3 Which is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these
4 Atomospheric pollutant is
A. CO2
B. CO
C. O2
D. N2
5 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone
6 The amount of Si in the lithosphere is about
A. 27.72%
B. 30.35%
C. 35.30%
D. 40.21%
7 UV radiations bring about
A. Skin cancer
B. Mouth cancer
C. Lung cancer
D. Liver cancer
8 Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as
A. Environment
B. Hydrosphere
C. Pollutant
D. Biosphere
9 The normal amount of overhead ozone is about
A. 250 Du
B. 300 DU
C. 350 DU
D. 400 DU
10 Ozone hole is maximum over
A. Europe
B. Antarctica
C. Asia
D. Africa

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