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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
In the atmosphere, CO2is about
Question # 2
Which of the following waste material is not recycled for use again
Question # 3
Swage water is purified by
Question # 4
Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution
Question # 5
Drawback DDT as presticide is
Question # 6
Water which his considered to be safe for human consumption is known as
Question # 7
Atomospheric pollutant is
Question # 8
In purification of potable water the coagulant used is
Question # 9
The toxic organic compounds and heavy metals and metalloids results in contamination of
Question # 10
Which of the following human activities are contaminating surface and ground waters
Question # 11
Industrial effuents have toxic synthetic organic compounds as well as heavy metals like
Question # 12
Acid rains are produced by
Question # 13
Sulphur dioxide affects
Question # 14
Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as
Question # 15
Soil remediation means
Question # 16
Chloroflurocarbon releases a chemical harmful to ozone
Question # 17
Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water
Question # 18
Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic
Question # 19
SO2and NO2produce pollution by increasing
Question # 20
Domestic waste mostly constitutes
Question # 21
Ecology is a science of environment and deals specially with
Question # 22
Air pollution is not caused by
Question # 23
Mottling of teeth is due to presence of an element in drinking water
Question # 24
DDT is
Question # 25
Which one of the following is not air pollutant gas
Question # 26
Chief air pollutant which is likely to deplete ozone layer
Question # 27
Acid rain is due to increase in atmospheric concentration of
Question # 28
BOD is
Question # 29
Ultraviolet radiation from sun causes a reaction that produces
Question # 30
Phosphate pollution is caused by
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 -
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 -
C Computer mail 10 - Feb - 2026 07 Min 01 Sec 76/120
ECAT Chemistry Chapter 27 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | NO and NO2gases in atmosphere are represented by |
A. NO
B. NO4
C. NOx
D. NxOy
|
| 2 | Increased asthmatic attacks in certain seasons are related to |
A. Inhalation of seasonal pollen
B. Eating of seasonal vegetables
C. Low temperature
D. Wet and dry environment
|
| 3 | Atmosphere of big/metropolitan cities is polluted most by |
A. Automobile exhausts
B. Pesticide residue
C. Household waste
D. Radio-active fall out
|
| 4 | Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water |
A. SO2
B. NO2
C. CO
D. A and b only
|
| 5 | The film forming components of paints are |
A. Resins
B. Thinners
C. Pigments
D. Driers
|
| 6 | Ozone depletion in stratosphere shall result in |
A. Forest fires
B. Increased incidence of skin cancer
C. Global warming
D. None of the above
|
| 7 | Which gasses are produced from landfills |
A. NH3
B. H2S
C. N2
D. All of these
|
| 8 | Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic |
A. It attaches to sulphur of the disulphide link
B. Hg is a heavy metal
C. Hg is liquid at room temperature
D. Hg is non reactive chemically
|
| 9 | Pollution is |
A. Removal of top soill
B. Release of toxic/undesirable materials in enevironment
C. Conversation of energy
D. All the above
|
| 10 | The amount of oxygen in the lithosphere is about |
A. 35.50%
B. 40.60%
C. 56.60%
D. 50.50%
|
Test Questions