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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
The toxic organic compounds and heavy metals and metalloids results in contamination of
Question # 2
Ultraviolet radiation from sun causes a reaction that produces
Question # 3
The pH range of the acid rain is
Question # 4
The film forming components of paints are
Question # 5
As it passes into food chain, the concentration of DDT
Question # 6
Drawback DDT as presticide is
Question # 7
Carbon monoxide is pollutant as it
Question # 8
Ozone depletion in stratosphere shall result in
Question # 9
Spraying of DDT produces pollution of
Question # 10
Which of the following human activities are contaminating surface and ground waters
Question # 11
The largest item which is recycled is
Question # 12
In Antarctica ozone depletion is due to the formation of following compound
Question # 13
Which one is the major reason for pollution in high cities?
Question # 14
Industrial effuents have toxic synthetic organic compounds as well as heavy metals like
Question # 15
The region of earth capable of supporting life is
Question # 16
Result of ozone hole is
Question # 17
A pollutant affects
Question # 18
Sulphur dioxide affects
Question # 19
Which of the following forms a toxic substance in blood by combing with hemoglobin?
Question # 20
Which of the following waste material is not recycled for use again
Question # 21
Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called
Question # 22
To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be
Question # 23
Which heavy metals do not have any safe limits
Question # 24
Swage water is purified by
Question # 25
Chromium (VI) is highly toxic and can cause
Question # 26
NO and NO2gases in atmosphere are represented by
Question # 27
Which one is the most toxic?
Question # 28
SO2and NO2produce pollution by increasing
Question # 29
Water is often treated with chlorine to
Question # 30
In water the most important oxidizing agent is dissolved molecular oxygen which ranges from
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 -
A Arian Ahmed 12 - Mar - 2024 00 Min 05 Sec 115/120 -
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
ECAT Chemistry Chapter 27 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | The toxic organic compounds and heavy metals and metalloids results in contamination of |
A. Surface water
B. Ground water
C. Both surface and ground water
D. Neither surface nor ground waters
|
| 2 | Ozone depletion in stratosphere shall result in |
A. Forest fires
B. Increased incidence of skin cancer
C. Global warming
D. None of the above
|
| 3 | 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
|
| 4 | Which one is the most toxic? |
A. Carbon
B. CO
C. CO2
D. SO2
|
| 5 | Increasing skin cancer and high mutation rate are due to |
A. Acid rain
B. Ozone depletion
C. CO pollution
D. CO2Pollution
|
| 6 | Photochemical smog is caused by |
A. CO
B. CO2
C. O3
D. NO2
|
| 7 | 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
|
| 8 | 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
|
| 9 | Drained sewage has B.O.D |
A. More than that of water
B. Less than that of water
C. Equal to that of water
D. None of the above
|
| 10 | Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere? |
A. Fullerences
B. Freons
C. Polyhalogens
D. Ferrocene
|
Test Questions
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