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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
Chloroflurocarbon releases a chemical harmful to ozone
Question # 2
Which is not a component of environment
Question # 3
Which of the following forms a toxic substance in blood by combing with hemoglobin?
Question # 4
Drawback DDT as presticide is
Question # 5
Classical smog occurs in palces of
Question # 6
A pollutant affects
Question # 7
Acid rain is due to increase in atmospheric concentration of
Question # 8
Which is not the affect of polluted air on environment
Question # 9
Domestic waste mostly constitutes
Question # 10
The toxic organic compounds and heavy metals and metalloids results in contamination of
Question # 11
Which gas is not a constituent of atmosphere
Question # 12
As it passes into food chain, the concentration of DDT
Question # 13
In incinerating the waste is burnt at
Question # 14
Chromium (VI) is highly toxic and can cause
Question # 15
In the atmosphere, O2is about
Question # 16
Burning of fossil fuels is the main source of pollution
Question # 17
NO and NO2gases in atmosphere are represented by
Question # 18
Photochemical smog is caused by
Question # 19
Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?
Question # 20
Chief air pollutant which is likely to deplete ozone layer
Question # 21
Exposure to CO results in
Question # 22
Ozone hole is maximum over
Question # 23
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 # 24
Most hazardous metal pollutant of automobile exhaust is
Question # 25
Minamata disease is due to pollution of
Question # 26
Ozone depletion in stratosphere shall result in
Question # 27
Water which his considered to be safe for human consumption is known as
Question # 28
Which of the following waste material is not recycled for use again
Question # 29
Depletion of ozone layer is due to
Question # 30
The amount of oxygen in the lithosphere is about
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 Zainab Tahira 14 - Jun - 2026 03 Min 29 Sec 104/120 -
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
ECAT Chemistry Chapter 27 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | Which of the following forms a toxic substance in blood by combing with hemoglobin? |
A. Carbon dioxide
B. Carbon monoxide
C. Oxygen
D. Methane
|
| 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 | In purification of potable water the coagulant used is |
A. Nickle sulpahte
B. Copper sulpahte
C. Barium sulpahte
D. Alum
|
| 4 | Air pollution is not caused by |
A. Pollen grains
B. Hydroelectric power
C. Industries
D. Automobiles
|
| 5 | Most hazardous metal pollutant of automobile exhaust is |
A. Mercury
B. Lead
C. Cadmium
D. Copper
|
| 6 | Environmental pollution affects |
A. Biotic components
B. Plants only
C. Man only
D. Biotic and abiotic components of environment
|
| 7 | B.O.D is connected with |
A. Organic matter
B. Microbes
C. Mircrobes and organic matter
D. None of the above
|
| 8 | Chromium (VI) is highly toxic and can cause |
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
|
| 9 | Chief source of water and soil pollution is |
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above
|
| 10 | Cyclone collector is used for minimizing |
A. Radioactive pollution
B. Air pollution
C. Noise pollution
D. Water pollution
|
Test Questions
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