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

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

Question # 2

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

Question # 3

Carbon monoxide is pollutant as it

Question # 4

Photochemical smog is caused by

Question # 5

Most hazardous metal pollutant of automobile exhaust is

Question # 6

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

Question # 7

Chromium (VI) is highly toxic and can cause

Question # 8

Which gasses are produced from landfills

Question # 9

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

Question # 10

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 # 11

The film forming components of paints are

Question # 12

Atmosphere of big/metropolitan cities is polluted most by

Question # 13

Chloroflurocarbon releases a chemical harmful to ozone

Question # 14

Burning of fossil fuels is the main source of pollution

Question # 15

DDT is

Question # 16

The amount of Si in the lithosphere is about

Question # 17

Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?

Question # 18

Water pollution is mainly due to

Question # 19

Which step is unnecessary for purification of water for drinking purposes

Question # 20

Pick up the correct statement

Question # 21

The largest item which is recycled is

Question # 22

Result of ozone hole is

Question # 23

Ultraviolet radiation from sun causes a reaction that produces

Question # 24

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

Question # 25

B.O.D is connected with

Question # 26

Minamata disease is due to pollution of

Question # 27

The % of CO2is the atmosphere is

Question # 28

The amount of oxygen in the lithosphere is about

Question # 29

What is the cause of water pollution

Question # 30

BOD is

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 Phosphate pollution is caused by
A. Weathering of phosphate rocks only
B. Agricultural fertilizers
C. Phosphate rocks and sewage
D. Sewage and agricultural fertilizers
2 Which of the following waste material is not recycled for use again
A. Paper
B. Plastic
C. Hides of animals
D. Glass
3 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone
4 Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic
A. It attaches to sulphur of the disulphide link
B. Hg is a heavy metal
C. Hg is liquid at room temperature
D. Hg is non reactive chemically
5 A single chlorine free radical can destroy how many ozone molecules
A. 100
B. 100000
C. 10000
D. 10
6 Which is not the condition for the formation of smog
A. There must be sufficient NO gas
B. There must be sunlight to help photo chemical reaction to take place
C. Air must be blowing swiftly
D. There must be SO2in the air
7 Ecosystem is a smaller unit of
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
8 SO2and NO2produce pollution by increasing
A. Alkalinity
B. Acidity
C. Neutrality
D. Buffer action
9 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
10 Which is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these

Test Questions

Is this page helpful?