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

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

Question # 2

DDT is

Question # 3

Water is often treated with chlorine to

Question # 4

Chief air pollutant which is likely to deplete ozone layer

Question # 5

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

Question # 6

Oceans cove ______ percent of the surface of the earth

Question # 7

SO2Makes ______ acid rains

Question # 8

The amount of Si in the lithosphere is about

Question # 9

Which gasses are produced from landfills

Question # 10

In the atmosphere, O2is about

Question # 11

Cyclone collector is used for minimizing

Question # 12

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

Question # 13

Minamata disease is due to pollution of

Question # 14

The largest item which is recycled is

Question # 15

Potable water is considered to be

Question # 16

Water pollution is mainly due to

Question # 17

Which of the following human activities are contaminating surface and ground waters

Question # 18

Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called

Question # 19

Photochemical smog is caused by

Question # 20

Spraying of DDT produces pollution of

Question # 21

SO2and NO2produce pollution by increasing

Question # 22

Which one is the most toxic?

Question # 23

Shahi Qilla may be destroyed by

Question # 24

Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due

Question # 25

Which is not a component of environment

Question # 26

In purification of potable water the coagulant used is

Question # 27

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

Question # 28

Ecosystem is a smaller unit of

Question # 29

Soil remediation means

Question # 30

Swage water is purified by

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 Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water
A. Low value
B. Higher value
C. Both values
D. None of these
2 Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as
A. Environment
B. Hydrosphere
C. Pollutant
D. Biosphere
3 When rain is accompanied by a thunderstorm, the collected rain water will have a pH value
A. Uninfluenced by occurrence of thuderstorm
B. Which depends on the amount of dust in air
C. Slightly lower than that of rain water without thunderstorm
D. Slighlty higher than that when the thunderstom is not there
4 Which one is the major reason for pollution in high cities?
A. Fossil fuel
B. Acid rain
C. Heat dispersion
D. None of the above
5 In incinerating the waste is burnt at
A. 1000°C
B. 100°C
C. 2000°C
D. 1500°C
6 When chlorofluoro carbon are subjected to U.V. they form
A. Cations
B. Anions
C. Free radicals
D. None of these
7 Result of ozone hole is
A. Green house effect
B. Global warming
C. Acid rain
D. UV rays reach the earth
8 Acid rains are produced by
A. Excess NO2and SO2 from burining fossil fuels
B. Excess production of NH3by industry and coal gas
C. Excess release of carbon monoxide by incomplete combustion
D. Excess formation of CO2by combustion and animal respiration
9 B.O.D is connected with
A. Organic matter
B. Microbes
C. Mircrobes and organic matter
D. None of the above
10 Oceans cove ______ percent of the surface of the earth
A. 60
B. 70
C. 80
D. 97

Test Questions

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!