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 is maximum over

Question # 2

Which is not the condition for the formation of smog

Question # 3

Atmosphere of big/metropolitan cities is polluted most by

Question # 4

UV radiations bring about

Question # 5

Result of ozone hole is

Question # 6

Increasing skin cancer and high mutation rate are due to

Question # 7

SO2Makes ______ acid rains

Question # 8

Which causes water pollution?

Question # 9

In the atmosphere, O2is about

Question # 10

In water the most important oxidizing agent is dissolved molecular oxygen which ranges from

Question # 11

Ecology is a science of environment and deals specially with

Question # 12

Pick up the correct statement

Question # 13

Increased asthmatic attacks in certain seasons are related to

Question # 14

Which one is the most toxic?

Question # 15

Burning of fossil fuels is the main source of pollution

Question # 16

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

Question # 17

Cyclone collector is used for minimizing

Question # 18

Oceans cove ______ percent of the surface of the earth

Question # 19

Environmental pollution affects

Question # 20

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

Question # 21

Biodegradable pollutant is

Question # 22

BOD is

Question # 23

Ozone hole refers to

Question # 24

The % of CO2is the atmosphere is

Question # 25

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

Question # 26

Chromium (VI) is highly toxic and can cause

Question # 27

Which step is unnecessary for purification of water for drinking purposes

Question # 28

Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as

Question # 29

Sulphur dioxide affects

Question # 30

Air pollution is not caused 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 Pollutant of automobile exhausts that affects nervous system/produces mental diseases is
A. Mercury
B. Lead
C. Nitrogen oxide
D. Sulphuric oxide
2 Soil remediation means
A. To make it suitable for cultivation of crops
B. To make it acidic
C. To make it alkeline
D. To add manure into it
3 Photochemical smog is caused by
A. CO
B. CO2
C. O3
D. NO2
4 Increasing skin cancer and high mutation rate are due to
A. Acid rain
B. Ozone depletion
C. CO pollution
D. CO2Pollution
5 Ecosystem is a smaller unit of
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
6 Ozone depletion in stratosphere shall result in
A. Forest fires
B. Increased incidence of skin cancer
C. Global warming
D. None of the above
7 The amount of Si in the lithosphere is about
A. 27.72%
B. 30.35%
C. 35.30%
D. 40.21%
8 The amount of oxygen in the lithosphere is about
A. 35.50%
B. 40.60%
C. 56.60%
D. 50.50%
9 Water is often treated with chlorine to
A. Increase oxygen content
B. Kill germs
C. Remove hardness
D. Remove suspended particles
10 Which of the following is not an air
A. N2
B. N2O
C. NO
D. CO

Test Questions

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!