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

Fungicides are the pesticides which

Question # 2

Biodegradable pollutant is

Question # 3

When chlorofluoro carbon are subjected to U.V. they form

Question # 4

A single chlorine free radical can destroy how many ozone molecules

Question # 5

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

Question # 6

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

Question # 7

Increasing skin cancer and high mutation rate are due to

Question # 8

Which is not the condition for the formation of smog

Question # 9

Most hazardous metal pollutant of automobile exhaust is

Question # 10

The amount of Si in the lithosphere is about

Question # 11

Ecology is a science of environment and deals specially with

Question # 12

Soil remediation means

Question # 13

Chromium (VI) is highly toxic and can cause

Question # 14

Which step is unnecessary for purification of water for drinking purposes

Question # 15

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

Question # 16

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 17

When rain is accompanied by a thunderstorm, the collected rain water will have a pH value

Question # 18

Water pollution is mainly due to

Question # 19

Environmental pollution affects

Question # 20

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 # 21

Domestic waste mostly constitutes

Question # 22

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

Question # 23

Pick up the correct statement

Question # 24

NO and NO2gases in atmosphere are represented by

Question # 25

Pollution is

Question # 26

The 95.5% mass of Lithosphone is made of 11 elements i.e. O2, Si, Al, Fe, Ca, Na, K, Mg, Ti, H2and P. which element is present in trace amount

Question # 27

Ozone hole refers to

Question # 28

Phosphate pollution is caused by

Question # 29

Burning of fossil fuels is the main source of pollution

Question # 30

Which heavy metals do not have any safe limits

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 The amount of oxygen in the lithosphere is about
A. 35.50%
B. 40.60%
C. 56.60%
D. 50.50%
2 Air pollution is not caused by
A. Pollen grains
B. Hydroelectric power
C. Industries
D. Automobiles
3 Which is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these
4 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
A. Live stock waste
B. Oil leaks and spills
C. Disposal of industrial effluents
D. Rain
5 Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?
A. Ozone
B. Nitrous oxide
C. Sulphure dioxide
D. Carbon monoxide
6 Water which his considered to be safe for human consumption is known as
A. Distilled water
B. Contaminated water
C. Potable water
D. Rain water
7 The region of earth capable of supporting life is
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
8 Oceans cove ______ percent of the surface of the earth
A. 60
B. 70
C. 80
D. 97
9 Carbon monoxide is pollutant as it
A. Inactivates nerves
B. Inhibits glycolysis
C. Combines with oxygen
D. Combines with hemoglobin
10 Drained sewage has B.O.D
A. More than that of water
B. Less than that of water
C. Equal to that of water
D. None of the above

Test Questions

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!