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

Environmental pollution affects

Question # 2

NO and NO2gases in atmosphere are represented by

Question # 3

Ozone hole refers to

Question # 4

Water which his considered to be safe for human consumption is known as

Question # 5

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

Question # 6

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 # 7

Ecology is a science of environment and deals specially with

Question # 8

Photochemical smog is caused by

Question # 9

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 10

The % of CO2is the atmosphere is

Question # 11

Which step is unnecessary for purification of water for drinking purposes

Question # 12

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

Question # 13

Which is not a component of environment

Question # 14

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 # 15

Burning of fossil fuels is the main source of pollution

Question # 16

Chloroflurocarbon releases a chemical harmful to ozone

Question # 17

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

Question # 18

In purification of potable water the coagulant used is

Question # 19

Pollution is

Question # 20

Drained sewage has B.O.D

Question # 21

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

Question # 22

Chromium (VI) is highly toxic and can cause

Question # 23

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

Question # 24

Pollutant of automobile exhausts that affects nervous system/produces mental diseases is

Question # 25

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

Question # 26

Pick up the correct statement

Question # 27

DDT is

Question # 28

Which of the following is not an air

Question # 29

Fungicides are the pesticides which

Question # 30

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

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 heavy metals do not have any safe limits
A. As
B. Hg
C. Cr
D. All of these
2 Which of the following is not an air
A. N2
B. N2O
C. NO
D. CO
3 Ozone hole refers to
A. Hole in ozone layers
B. Reduction in thickness of ozone layer in stratosphere
C. Reduction of thickness of ozone in troposphere
D. Increase concentration of ozone
4 Eutrophication causes reduction in
A. Dissolved hydrogen
B. Dissolved oxygen
C. Dissolved salts
D. All the above
5 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
6 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
A. Iodine
B. Bromine
C. Lead
D. Carbon
7 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
8 Exposure to CO results in
A. Headache
B. Fatigue
C. Unconsciousness
D. All of these
9 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
10 Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as
A. Environment
B. Hydrosphere
C. Pollutant
D. Biosphere

Test Questions

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!