Home
News
Colleges
Courses
Admission
Lectures
Online Test
Past Papers
Date Sheets
Results
Study Abroad
Jobs
Tutors
More
Apps
.jpg)
MCQ's Test For ECAT Chemistry Chapter 27 Environmental Chemistry
Try The MCQ's Test For ECAT Chemistry Chapter 27 Environmental Chemistry
-
Total Questions30
-
Time Allowed30
ECAT Chemistry Chapter 27 Environmental Chemistry
00:00
Question # 1
When chlorofluoro carbon are subjected to U.V. they form
Question # 2
Burning of fossil fuels is the main source of pollution
Question # 3
Which one is not a pollutant normally?
Question # 4
The amount of oxygen in the lithosphere is about
Question # 5
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 # 6
Water is often treated with chlorine to
Question # 7
Polycyolic aromatic hydrocarbons are taught to be
Question # 8
Which is not a component of environment
Question # 9
The 95.5% mass of Lithosphone is made of 11 elements i.e. O2, Si, Al, Fe, Ca, Na, K, Mg, Ti, H2and P. which element is present in trace amount
Question # 10
Water pollution is mainly due to
Question # 11
A single chlorine free radical can destroy how many ozone molecules
Question # 12
Which causes water pollution?
Question # 13
Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?
Question # 14
Sulphur dioxide affects
Question # 15
In the atmosphere, O2is about
Question # 16
Biodegradable pollutant is
Question # 17
Acid rain is due to increase in atmospheric concentration of
Question # 18
In the atmosphere, CO2is about
Question # 19
The amount of Si in the lithosphere is about
Question # 20
Drained sewage has B.O.D
Question # 21
Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone
Question # 22
SO2Makes ______ acid rains
Question # 23
Cyclone collector is used for minimizing
Question # 24
Which of the following waste material is not recycled for use again
Question # 25
Which one is the most toxic?
Question # 26
SO2and NO2produce pollution by increasing
Question # 27
Eutrophication causes reduction in
Question # 28
Spraying of DDT produces pollution of
Question # 29
Industrial effuents have toxic synthetic organic compounds as well as heavy metals like
Question # 30
Depletion of ozone layer is due to
Top Scorers Of ECAT Chemistry Chapter 27 Environmental Chemistry MCQ`s Test
-
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 | UV radiations bring about |
A. Skin cancer
B. Mouth cancer
C. Lung cancer
D. Liver cancer
|
| 2 | Drawback DDT as presticide is |
A. I becomes ineffective after some time
B. It is less effective than others
C. It is not easily/rapidly degraded in nature
D. Its high cost
|
| 3 | Environmental pollution affects |
A. Biotic components
B. Plants only
C. Man only
D. Biotic and abiotic components of environment
|
| 4 | Chief source of water and soil pollution is |
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above
|
| 5 | Classical smog occurs in palces of |
A. Excess SO2
B. Low temperature
C. High temperature
D. Excess NH3
|
| 6 | The amount of oxygen in the lithosphere is about |
A. 35.50%
B. 40.60%
C. 56.60%
D. 50.50%
|
| 7 | Which one of the following is not air pollutant gas |
A. CO
B. CO2
C. NO
D. SO2
|
| 8 | Domestic waste mostly constitutes |
A. Non-biodegradable pollution
B. Biodegradable pollution
C. Effluents
D. Air pollution
|
| 9 | When chlorofluoro carbon are subjected to U.V. they form |
A. Cations
B. Anions
C. Free radicals
D. None of these
|
| 10 | Photochemical smog is caused by |
A. CO
B. CO2
C. O3
D. NO2
|
Test Questions
Share your comments & questions here
No comments yet. Be the first to comment!