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

Which heavy metals do not have any safe limits

Question # 2

NO and NO2gases in atmosphere are represented by

Question # 3

Ultraviolet radiation from sun causes a reaction that produces

Question # 4

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

Question # 5

The region of earth capable of supporting life is

Question # 6

In the atmosphere, CO2is about

Question # 7

Ozone hole refers to

Question # 8

Potable water is considered to be

Question # 9

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

Question # 10

DDT is

Question # 11

Ozone in most of the tropical regions acts as a pollutant and causes

Question # 12

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

Question # 13

Shahi Qilla may be destroyed by

Question # 14

Which one is the most toxic?

Question # 15

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

Question # 16

Carbon monoxide is harmful to human beings as it

Question # 17

Burning of fossil fuels is the main source of pollution

Question # 18

Ecology is a science of environment and deals specially with

Question # 19

UV radiations bring about

Question # 20

The 95.5% mass of Lithosphone is made of 11 elements i.e. O2, Si, Al, Fe, Ca, Na, K, Mg, Ti, H2and P. which element is present in trace amount

Question # 21

Classical smog occurs in palces of

Question # 22

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

Question # 23

Drained sewage has B.O.D

Question # 24

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

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

Biodegradable pollutant is

Question # 27

When rain is accompanied by a thunderstorm, the collected rain water will have a pH value

Question # 28

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

Question # 29

Which is not the affect of polluted air on environment

Question # 30

Acid rains are produced 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 Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone
2 The amount of Si in the lithosphere is about
A. 27.72%
B. 30.35%
C. 35.30%
D. 40.21%
3 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
A. Live stock waste
B. Oil leaks and spills
C. Disposal of industrial effluents
D. Rain
4 Eutrophication causes reduction in
A. Dissolved hydrogen
B. Dissolved oxygen
C. Dissolved salts
D. All the above
5 UV radiations bring about
A. Skin cancer
B. Mouth cancer
C. Lung cancer
D. Liver cancer
6 Industrial effuents have toxic synthetic organic compounds as well as heavy metals like
A. Pb
B. Cr
C. Hg
D. All of these
7 Water which his considered to be safe for human consumption is known as
A. Distilled water
B. Contaminated water
C. Potable water
D. Rain water
8 In Antarctica ozone depletion is due to the formation of following compound
A. Acrolein
B. Peroxy acetyl nitrate
C. SO2and SO3
D. Chlorine nitrate
9 In the atmosphere, O2is about
A. 10%
B. 15%
C. 21%
D. 25%
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!