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

Shahi Qilla may be destroyed by

Question # 2

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

Question # 3

Chief source of water and soil pollution is

Question # 4

Which is not a component of environment

Question # 5

In purification of potable water the coagulant used is

Question # 6

Cyclone collector is used for minimizing

Question # 7

In Antarctica ozone depletion is due to the formation of following compound

Question # 8

Which is not the affect of polluted air on environment

Question # 9

SO2and NO2produce pollution by increasing

Question # 10

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 11

Which one is the most toxic?

Question # 12

A single chlorine free radical can destroy how many ozone molecules

Question # 13

Potable water is considered to be

Question # 14

The region of earth capable of supporting life is

Question # 15

Ecosystem is a smaller unit of

Question # 16

Carbon monoxide is pollutant as it

Question # 17

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

Question # 18

Eutrophication causes reduction in

Question # 19

Which factor is helping to reduce the environmental pollution

Question # 20

Ozone hole refers to

Question # 21

In the atmosphere, O2is about

Question # 22

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

Question # 23

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

Question # 24

Which one is the major reason for pollution in high cities?

Question # 25

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 # 26

SO2Makes ______ acid rains

Question # 27

Drained sewage has B.O.D

Question # 28

Oceans cove ______ percent of the surface of the earth

Question # 29

The amount of oxygen in the lithosphere is about

Question # 30

A pollutant affects

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 Depletion of ozone layer is due to
A. Oxides of nitrogen
B. Oxides of carbon
C. Oxides of sulphur
D. None of the above
2 Biodegradable pollutant is
A. Plastic
B. Asbestos
C. Sewage
D. Mercury
3 Which heavy metals do not have any safe limits
A. As
B. Hg
C. Cr
D. All of these
4 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
5 Spraying of DDT produces pollution of
A. Air
B. Air and water
C. Air and soil
D. Air, water and soil
6 Potable water is considered to be
A. Safe for human consumption
B. Not safe for human consumption
C. The surface water
D. The ground water
7 Which causes water pollution?
A. Smoke/fly ash
B. Automobile exhausts
C. Aeroplnes
D. 2,4-D and pesticides
8 Which is not the affect of polluted air on environment
A. Acid rain
B. Smog
C. Ozone
D. Global warming
9 Acid rain is due to increase in atmospheric concentration of
A. Ozone and dust
B. CO2and CO
C. SO3and CO
D. SO2and NO2
10 Pick up the correct statement
A. CO which is major pollutant resulting from the combustion of fuels in automobile plays a major role in photochemical smog
B. Classical smog has an oxidizing character while the phtochemical smog is reducing in character
C. Photochemical smog occurs in day time whereas the classical smog occurs in early morning hours
D. During formation of smog the level of ozone in the atmosphere goes down

Test Questions

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!