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

Ecology is a science of environment and deals specially with

Question # 2

Which step is unnecessary for purification of water for drinking purposes

Question # 3

Which gasses are produced from landfills

Question # 4

Ozone hole refers to

Question # 5

Carbon monoxide is pollutant as it

Question # 6

Which of the following forms a toxic substance in blood by combing with hemoglobin?

Question # 7

Acid rains are produced by

Question # 8

Which one is the most toxic?

Question # 9

The % of CO2is the atmosphere is

Question # 10

In the atmosphere, O2is about

Question # 11

Exposure to CO results in

Question # 12

The normal amount of overhead ozone is about

Question # 13

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

Question # 14

Which is not a component of environment

Question # 15

Drawback DDT as presticide is

Question # 16

Which is not a method for solid waste management

Question # 17

Pollution is

Question # 18

To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be

Question # 19

Which causes water pollution?

Question # 20

Swage water is purified by

Question # 21

Chief air pollutant which is likely to deplete ozone layer

Question # 22

Potable water is considered to be

Question # 23

Fungicides are the pesticides which

Question # 24

Which is not the condition for the formation of smog

Question # 25

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

Question # 26

Carbon monoxide is harmful to human beings as it

Question # 27

Atmosphere of big/metropolitan cities is polluted most by

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

Water is often treated with chlorine to

Question # 30

Increasing skin cancer and high mutation rate are due to

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 Carbon monoxide is harmful to human beings as it
A. Is carcinogenic
B. Is antagonistic to CO2
C. Has higher affinity for hemoglobin as compared to oxygen
D. Is destructive to O3
2 CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy
A. 10,000
B. 20,000
C. 100,000
D. 50,000
3 Ozone layer of stratosphere requires protection from indiscriminate use of
A. Fungicides, insecticides, bactericides and medicines
B. Aerosols and high flying jets
C. Atomic explosions and industrial wastes
D. Baloons and turbo-prop aeroplanes
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 Which gas is not a constituent of atmosphere
A. Xe
B. O3
C. H2
D. F2
6 Carbon monoxide is pollutant as it
A. Inactivates nerves
B. Inhibits glycolysis
C. Combines with oxygen
D. Combines with hemoglobin
7 Chloroflurocarbon releases a chemical harmful to ozone
A. Fluorine
B. Chlorine
C. Nitrogen peroxide
D. Sulphure dioxdie
8 As it passes into food chain, the concentration of DDT
A. Remains same
B. Decreases
C. Increases
D. Unpredictable
9 The pH range of the acid rain is
A. 8 - 7
B. 7 - 6.5
C. 6.5 - 6
D. Less than 5
10 Atomospheric pollutant is
A. CO2
B. CO
C. O2
D. N2

Test Questions

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!