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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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Total Questions30
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Time Allowed30
ECAT Chemistry Chapter 27 Environmental Chemistry
00:00
Question # 1
BOD is
Question # 2
Which step is unnecessary for purification of water for drinking purposes
Question # 3
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 # 4
Carbon monoxide is pollutant as it
Question # 5
Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?
Question # 6
In the atmosphere, O2is about
Question # 7
The % of CO2is the atmosphere is
Question # 8
Which heavy metals do not have any safe limits
Question # 9
Chief air pollutant which is likely to deplete ozone layer
Question # 10
Ecosystem is a smaller unit of
Question # 11
The pH range of the acid rain is
Question # 12
Which one of the following is not air pollutant gas
Question # 13
Which one is the major reason for pollution in high cities?
Question # 14
The film forming components of paints are
Question # 15
Cyclone collector is used for minimizing
Question # 16
In incinerating the waste is burnt at
Question # 17
Which one is not a pollutant normally?
Question # 18
Which causes water pollution?
Question # 19
SO2Makes ______ acid rains
Question # 20
Water which his considered to be safe for human consumption is known as
Question # 21
Ozone depletion in stratosphere shall result in
Question # 22
The amount of Si in the lithosphere is about
Question # 23
Increased asthmatic attacks in certain seasons are related to
Question # 24
Which is not a component of environment
Question # 25
Water is often treated with chlorine to
Question # 26
The toxic organic compounds and heavy metals and metalloids results in contamination of
Question # 27
Ozone hole refers to
Question # 28
Which one is the most toxic?
Question # 29
Ecology is a science of environment and deals specially with
Question # 30
Drained sewage has B.O.D
Top Scorers Of ECAT Chemistry Chapter 27 Environmental Chemistry MCQ`s Test
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F Farzand Shah Farzand Shah 10 - Apr - 2024 03 Min 00 Sec 120/120 -
T Tanzeel Ur Rehman 28 - May - 2024 04 Min 15 Sec 115/120 -
M M Umer Arain 24 - Dec - 2024 00 Min 04 Sec 110/120 -
A Alyna Fatima 25 - Mar - 2024 03 Min 12 Sec 110/120 -
S Sarosh Amjad 21 - Jan - 2025 03 Min 44 Sec 110/120 -
A Abid Ali 19 - May - 2024 10 Min 33 Sec 110/120 -
A Alyna Fatima 25 - Mar - 2024 03 Min 28 Sec 105/120 -
Z Zaman Shehzad 24 - May - 2024 09 Min 53 Sec 95/120 -
M Muhammad Uzair 05 - Jun - 2024 03 Min 33 Sec 90/120 -
Z Zargaii 92 29 - May - 2024 06 Min 59 Sec 90/120 -
C Cricket Expert's 27 - May - 2024 03 Min 01 Sec 85/120 -
M Muhammad Saleem 06 - Dec - 2024 13 Min 11 Sec 85/120 -
T tayyab ali 20 - May - 2024 19 Min 22 Sec 80/120 -
C Computer mail 10 - Feb - 2026 07 Min 01 Sec 76/120 -
A Ayesha Fatima 28 - Jul - 2024 06 Min 59 Sec 75/120
ECAT Chemistry Chapter 27 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | 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
|
| 2 | The largest item which is recycled is |
A. Newspaper
B. Plastic
C. Aluminium
D. Oil
|
| 3 | Air pollution is not caused by |
A. Pollen grains
B. Hydroelectric power
C. Industries
D. Automobiles
|
| 4 | In incinerating the waste is burnt at |
A. 1000°C
B. 100°C
C. 2000°C
D. 1500°C
|
| 5 | Which step is unnecessary for purification of water for drinking purposes |
A. Aeration
B. Coagulation
C. Treatment with chlorine
D. Treatment with iodine
|
| 6 | Carbon monoxide is harmful to human beings as it |
A. Is carcinogenic
B. Is antagonistic to CO2
C. Has higher affinity for hemoglobin as compared to oxygen
D. Is destructive to O3
|
| 7 | Swage water is purified by |
A. Microorganisms
B. Light
C. Fishes
D. Aquatic plants
|
| 8 | A single chlorine free radical can destroy how many ozone molecules |
A. 100
B. 100000
C. 10000
D. 10
|
| 9 | Which is not a method for solid waste management |
A. Landfill
B. Incinerating
C. Recycling
D. None of these
|
| 10 | The film forming components of paints are |
A. Resins
B. Thinners
C. Pigments
D. Driers
|
Test Questions
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