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

Pick up the correct statement

Question # 2

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

Question # 3

Which heavy metals do not have any safe limits

Question # 4

Ultraviolet radiation from sun causes a reaction that produces

Question # 5

To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be

Question # 6

Chromium (VI) is highly toxic and can cause

Question # 7

Polycyolic aromatic hydrocarbons are taught to be

Question # 8

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 9

Minamata disease is due to pollution of

Question # 10

Acid rain is due to increase in atmospheric concentration of

Question # 11

Increased asthmatic attacks in certain seasons are related to

Question # 12

Chief air pollutant which is likely to deplete ozone layer

Question # 13

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

Question # 14

The amount of Si in the lithosphere is about

Question # 15

Which is not a component of environment

Question # 16

Depletion of ozone layer is due to

Question # 17

Atmosphere of big/metropolitan cities is polluted most by

Question # 18

Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution

Question # 19

Which one is the most toxic?

Question # 20

Air pollution is not caused by

Question # 21

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

Question # 22

Which one of the following is not air pollutant gas

Question # 23

Acid rains are produced by

Question # 24

Water is often treated with chlorine to

Question # 25

Which is not a method for solid waste management

Question # 26

Which is not the affect of polluted air on environment

Question # 27

Ecology is a science of environment and deals specially with

Question # 28

UV radiations bring about

Question # 29

Oceans cove ______ percent of the surface of the earth

Question # 30

DDT 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
    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 In purification of potable water the coagulant used is
A. Nickle sulpahte
B. Copper sulpahte
C. Barium sulpahte
D. Alum
2 Air pollution is not caused by
A. Pollen grains
B. Hydroelectric power
C. Industries
D. Automobiles
3 Classical smog occurs in palces of
A. Excess SO2
B. Low temperature
C. High temperature
D. Excess NH3
4 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone
5 Which factor is helping to reduce the environmental pollution
A. Rapid growth of population
B. Urbanization
C. Industrialization
D. Increase of plantation
6 In water the most important oxidizing agent is dissolved molecular oxygen which ranges from
A. 2 - 4 ppm
B. 4 - 6 ppm
C. 2 - 5 ppm
D. 4 - 8 ppm
7 Which is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these
8 Which is not the affect of polluted air on environment
A. Acid rain
B. Smog
C. Ozone
D. Global warming
9 The film forming components of paints are
A. Resins
B. Thinners
C. Pigments
D. Driers
10 In the atmosphere, O2is about
A. 10%
B. 15%
C. 21%
D. 25%

Test Questions

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!