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

One of the environmental problem is the formation of oil slicks when oil is spilled from tankers in sea water. Which treatment is suitable to remove oil slicks

Question # 2

Ozone depletion in stratosphere shall result in

Question # 3

Eutrophication causes reduction in

Question # 4

Domestic waste mostly constitutes

Question # 5

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

Question # 6

BOD is

Question # 7

Depletion of ozone layer is due to

Question # 8

A single chlorine free radical can destroy how many ozone molecules

Question # 9

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

Question # 10

Water is often treated with chlorine to

Question # 11

Which of the following waste material is not recycled for use again

Question # 12

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 13

Environmental pollution affects

Question # 14

Drawback DDT as presticide is

Question # 15

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

Question # 16

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

Question # 17

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

Question # 18

Photochemical smog is caused by

Question # 19

SO2and NO2produce pollution by increasing

Question # 20

The pH of the rain water in areas where acid rain is the cause of pollution may be

Question # 21

Which is not the condition for the formation of smog

Question # 22

Chloroflurocarbon releases a chemical harmful to ozone

Question # 23

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

Question # 24

In purification of potable water the coagulant used is

Question # 25

Oceans cove ______ percent of the surface of the earth

Question # 26

Which is not a component of environment

Question # 27

Which one is not a pollutant normally?

Question # 28

Increasing skin cancer and high mutation rate are due to

Question # 29

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

Question # 30

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

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 Ecology is a science of environment and deals specially with
A. Stratosphere
B. Biosphere
C. Lithosphere
D. Hydrosphere
2 Which gas is not a constituent of atmosphere
A. Xe
B. O3
C. H2
D. F2
3 A pollutant affects
A. Human health
B. Quality of life
C. Functioning of ecosystem
D. All of these
4 Which of the following forms a toxic substance in blood by combing with hemoglobin?
A. Carbon dioxide
B. Carbon monoxide
C. Oxygen
D. Methane
5 Chief source of water and soil pollution is
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above
6 SO2Makes ______ acid rains
A. Carbonic acid
B. Sulfuric
C. Nitric acid
D. All of these
7 Shahi Qilla may be destroyed by
A. Flood in Ravi
B. Temperature mediated spoilage of marble
C. Air pollutants from Lahore chemical industries
D. All the above
8 Air pollution is not caused by
A. Pollen grains
B. Hydroelectric power
C. Industries
D. Automobiles
9 The largest item which is recycled is
A. Newspaper
B. Plastic
C. Aluminium
D. Oil
10 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems

Test Questions

Is this page helpful?