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

Cyclone collector is used for minimizing

Question # 2

Sulphur dioxide affects

Question # 3

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

Question # 4

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

Question # 5

Minamata disease is due to pollution of

Question # 6

Ecosystem is a smaller unit of

Question # 7

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

Question # 8

Potable water is considered to be

Question # 9

Which one is the most toxic?

Question # 10

Ozone hole refers to

Question # 11

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

Question # 12

Oceans cove ______ percent of the surface of the earth

Question # 13

Pick up the correct statement

Question # 14

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

Question # 15

Classical smog occurs in palces of

Question # 16

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

Question # 17

Eutrophication causes reduction in

Question # 18

Increased asthmatic attacks in certain seasons are related to

Question # 19

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

Question # 20

Atomospheric pollutant is

Question # 21

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

Question # 22

Air pollution is not caused by

Question # 23

Domestic waste mostly constitutes

Question # 24

As it passes into food chain, the concentration of DDT

Question # 25

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

Question # 26

Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water

Question # 27

Which is not a component of environment

Question # 28

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

Question # 29

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

Question # 30

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

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
  • A
    Azeema Siddique Muhammad Siddique 13 - Mar - 2024 04 Min 24 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 A single chlorine free radical can destroy how many ozone molecules
A. 100
B. 100000
C. 10000
D. 10
2 Which of the following forms a toxic substance in blood by combing with hemoglobin?
A. Carbon dioxide
B. Carbon monoxide
C. Oxygen
D. Methane
3 The amount of Si in the lithosphere is about
A. 27.72%
B. 30.35%
C. 35.30%
D. 40.21%
4 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
5 DDT is
A. Biodegradable pollutant
B. Nondegradable pollutant
C. Not a pollutant
D. An antibiotic
6 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
7 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
8 Increasing skin cancer and high mutation rate are due to
A. Acid rain
B. Ozone depletion
C. CO pollution
D. CO2Pollution
9 Pollution is
A. Removal of top soill
B. Release of toxic/undesirable materials in enevironment
C. Conversation of energy
D. All the above
10 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone

Test Questions

Is this page helpful?