ECAT Pre Engineering Chemistry Chapter 27 MCQ Test With Answer

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

Start Test Download PDF

ECAT Chemistry Chapter 27 Environmental Chemistry

00:00
Question # 1

Burning of fossil fuels is the main source of pollution

Question # 2

SO2and NO2produce pollution by increasing

Question # 3

Which is not the affect of polluted air on environment

Question # 4

In the atmosphere, CO2is about

Question # 5

In purification of potable water the coagulant used is

Question # 6

BOD is

Question # 7

Which one of the following is not air pollutant gas

Question # 8

Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone

Question # 9

Industrial effuents have toxic synthetic organic compounds as well as heavy metals like

Question # 10

Which step is unnecessary for purification of water for drinking purposes

Question # 11

Water is often treated with chlorine to

Question # 12

Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic

Question # 13

Which one is the most toxic?

Question # 14

DDT is

Question # 15

When chlorofluoro carbon are subjected to U.V. they form

Question # 16

Water which his considered to be safe for human consumption is known as

Question # 17

Which is not a method for solid waste management

Question # 18

Eutrophication causes reduction in

Question # 19

Which is not a component of environment

Question # 20

Phosphate pollution is caused by

Question # 21

Fungicides are the pesticides which

Question # 22

The normal amount of overhead ozone is about

Question # 23

The amount of Si in the lithosphere is about

Question # 24

In incinerating the waste is burnt at

Question # 25

Pollutant of automobile exhausts that affects nervous system/produces mental diseases is

Question # 26

Atomospheric pollutant is

Question # 27

Increasing skin cancer and high mutation rate are due to

Question # 28

Surface and ground water sources are contaminated by various human activities. Which of the followings is not a human activity that causes contamination in fresh water

Question # 29

Pollution is

Question # 30

Chief air pollutant which is likely to deplete ozone layer

Submit

Prepare Complete Set Wise ECAT Chemistry Chapter 27 Environmental Chemistry MCQs Online With Answers


Topic Test

00:00
Submit

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 Shahi Qilla may be destroyed by
A. Flood in Ravi
B. Temperature mediated spoilage of marble
C. Air pollutants from Lahore chemical industries
D. All the above
2 Increasing skin cancer and high mutation rate are due to
A. Acid rain
B. Ozone depletion
C. CO pollution
D. CO2Pollution
3 The amount of oxygen in the lithosphere is about
A. 35.50%
B. 40.60%
C. 56.60%
D. 50.50%
4 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy
5 Pollutant of automobile exhausts that affects nervous system/produces mental diseases is
A. Mercury
B. Lead
C. Nitrogen oxide
D. Sulphuric oxide
6 The region of earth capable of supporting life is
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
7 Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone
8 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone
9 Oceans cove ______ percent of the surface of the earth
A. 60
B. 70
C. 80
D. 97
10 Which step is unnecessary for purification of water for drinking purposes
A. Aeration
B. Coagulation
C. Treatment with chlorine
D. Treatment with iodine

Test Questions

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!