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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
Ozone in most of the tropical regions acts as a pollutant and causes
Question # 2
Atmosphere of big/metropolitan cities is polluted most by
Question # 3
Ozone hole refers to
Question # 4
Acid rain is due to increase in atmospheric concentration of
Question # 5
Which one is not a pollutant normally?
Question # 6
Classical smog occurs in palces of
Question # 7
Chromium (VI) is highly toxic and can cause
Question # 8
Oceans cove ______ percent of the surface of the earth
Question # 9
Shahi Qilla may be destroyed by
Question # 10
Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?
Question # 11
When rain is accompanied by a thunderstorm, the collected rain water will have a pH value
Question # 12
Domestic waste mostly constitutes
Question # 13
SO2and NO2produce pollution by increasing
Question # 14
B.O.D is connected with
Question # 15
SO2Makes ______ acid rains
Question # 16
As it passes into food chain, the concentration of DDT
Question # 17
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 # 18
Ecosystem is a smaller unit of
Question # 19
A single chlorine free radical can destroy how many ozone molecules
Question # 20
Air pollution is not caused by
Question # 21
Which of the following is not an air
Question # 22
Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due
Question # 23
Soil remediation means
Question # 24
Which factor is helping to reduce the environmental pollution
Question # 25
The toxic organic compounds and heavy metals and metalloids results in contamination of
Question # 26
Water which his considered to be safe for human consumption is known as
Question # 27
Exposure to CO results in
Question # 28
Pollutant of automobile exhausts that affects nervous system/produces mental diseases is
Question # 29
Which step is unnecessary for purification of water for drinking purposes
Question # 30
Which one is the major reason for pollution in high cities?
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 -
R Rana Muzamil 12 - Mar - 2024 05 Min 04 Sec 100/120 -
Z Zaman Shehzad 24 - May - 2024 09 Min 53 Sec 95/120 -
M Muhammad Uzair 05 - Jun - 2024 03 Min 33 Sec 90/120 -
A Azeema Siddique Muhammad Siddique 13 - Mar - 2024 04 Min 24 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
ECAT Chemistry Chapter 27 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | Potable water is considered to be |
A. Safe for human consumption
B. Not safe for human consumption
C. The surface water
D. The ground water
|
| 2 | Which of the following human activities are contaminating surface and ground waters |
A. Pesticides
B. Septic tanks
C. Petroleum and natural gas production
D. All of these
|
| 3 | Photochemical smog is caused by |
A. CO
B. CO2
C. O3
D. NO2
|
| 4 | The normal amount of overhead ozone is about |
A. 250 Du
B. 300 DU
C. 350 DU
D. 400 DU
|
| 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 | Which gas is not a constituent of atmosphere |
A. Xe
B. O3
C. H2
D. F2
|
| 7 | Atomospheric pollutant is |
A. CO2
B. CO
C. O2
D. N2
|
| 8 | Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due |
A. Combining with oxygen to form carbon dioxide
B. Destruction of hemoglobin
C. Preventing reaction between oxygen and hemoglobin
D. Forming stable compound with hemoglobin
|
| 9 | Minamata disease is due to pollution of |
A. Organic waste into drinking water
B. Oil spill in water
C. Industrial waste containing mercury into fishing water
D. Arsenic into the atmosphere
|
| 10 | SO2Makes ______ acid rains |
A. Carbonic acid
B. Sulfuric
C. Nitric acid
D. All of these
|
Test Questions
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