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

Ozone hole refers to

Question # 2

Shahi Qilla may be destroyed by

Question # 3

Chromium (VI) is highly toxic and can cause

Question # 4

Which gas is not a constituent of atmosphere

Question # 5

Spraying of DDT produces pollution of

Question # 6

Sulphur dioxide affects

Question # 7

The amount of Si in the lithosphere is about

Question # 8

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

Question # 9

Which gasses are produced from landfills

Question # 10

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

Question # 11

B.O.D is connected with

Question # 12

Ecosystem is a smaller unit of

Question # 13

Ultraviolet radiation from sun causes a reaction that produces

Question # 14

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

Question # 15

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

Question # 16

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

Question # 17

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

Question # 18

Fungicides are the pesticides which

Question # 19

Oceans cove ______ percent of the surface of the earth

Question # 20

Increasing skin cancer and high mutation rate are due to

Question # 21

Ozone depletion in stratosphere shall result in

Question # 22

Domestic waste mostly constitutes

Question # 23

In incinerating the waste is burnt at

Question # 24

As it passes into food chain, the concentration of DDT

Question # 25

Chloroflurocarbon releases a chemical harmful to ozone

Question # 26

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

Question # 27

Water pollution is mainly due to

Question # 28

Swage water is purified by

Question # 29

Environmental pollution affects

Question # 30

The amount of oxygen in the lithosphere is about

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 Which one of the following is not air pollutant gas
A. CO
B. CO2
C. NO
D. SO2
2 A single chlorine free radical can destroy how many ozone molecules
A. 100
B. 100000
C. 10000
D. 10
3 Ozone in most of the tropical regions acts as a pollutant and causes
A. Damages to eyes
B. Aggravates asthma
C. Chest discomfort
D. All of these
4 Sulphur dioxide affects
A. Cell wall
B. Plasmodesmata
C. All membrane systems
D. Nucleus
5 SO2and NO2produce pollution by increasing
A. Alkalinity
B. Acidity
C. Neutrality
D. Buffer action
6 Acid rain is due to increase in atmospheric concentration of
A. Ozone and dust
B. CO2and CO
C. SO3and CO
D. SO2and NO2
7 The largest item which is recycled is
A. Newspaper
B. Plastic
C. Aluminium
D. Oil
8 Photochemical smog is caused by
A. CO
B. CO2
C. O3
D. NO2
9 Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone
10 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy

Test Questions

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!