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

Atmosphere of big/metropolitan cities is polluted most by

Question # 2

The toxic organic compounds and heavy metals and metalloids results in contamination of

Question # 3

Air pollution is not caused by

Question # 4

The normal amount of overhead ozone is about

Question # 5

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

Question # 6

Drawback DDT as presticide is

Question # 7

CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy

Question # 8

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 # 9

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

Question # 10

Minamata disease is due to pollution of

Question # 11

Pick up the correct statement

Question # 12

Which step is unnecessary for purification of water for drinking purposes

Question # 13

In the atmosphere, CO2is about

Question # 14

Polycyolic aromatic hydrocarbons are taught to be

Question # 15

Most hazardous metal pollutant of automobile exhaust is

Question # 16

As it passes into food chain, the concentration of DDT

Question # 17

Carbon monoxide is pollutant as it

Question # 18

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

Question # 19

SO2and NO2produce pollution by increasing

Question # 20

Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water

Question # 21

Mottling of teeth is due to presence of an element in drinking water

Question # 22

Pollution is

Question # 23

Atomospheric pollutant is

Question # 24

Which heavy metals do not have any safe limits

Question # 25

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

Question # 26

Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?

Question # 27

Swage water is purified by

Question # 28

Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?

Question # 29

Cyclone collector is used for minimizing

Question # 30

Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as

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
    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
  • A
    Ayesha Fatima 28 - Jul - 2024 06 Min 59 Sec 75/120

ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Domestic waste mostly constitutes
A. Non-biodegradable pollution
B. Biodegradable pollution
C. Effluents
D. Air pollution
2 In the atmosphere, CO2is about
A. 0.01%
B. 0.03%
C. 0.05%
D. 0.09%
3 Result of ozone hole is
A. Green house effect
B. Global warming
C. Acid rain
D. UV rays reach the earth
4 A pollutant affects
A. Human health
B. Quality of life
C. Functioning of ecosystem
D. All of these
5 Water pollution is mainly due to
A. Sulphure dioxide
B. Carbon dioxide
C. Oxygen
D. Industrial discharges
6 As it passes into food chain, the concentration of DDT
A. Remains same
B. Decreases
C. Increases
D. Unpredictable
7 Ozone hole refers to
A. Hole in ozone layers
B. Reduction in thickness of ozone layer in stratosphere
C. Reduction of thickness of ozone in troposphere
D. Increase concentration of ozone
8 Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due
A. Combining with oxygen to form carbon dioxide
B. Destruction of hemoglobin
C. Preventing reaction between oxygen and hemoglobin
D. Forming stable compound with hemoglobin
9 Photochemical smog is caused by
A. CO
B. CO2
C. O3
D. NO2
10 Most hazardous metal pollutant of automobile exhaust is
A. Mercury
B. Lead
C. Cadmium
D. Copper

Test Questions

Is this page helpful?

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!