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

The pH range of the acid rain is

Question # 2

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

Question # 3

Chromium (VI) is highly toxic and can cause

Question # 4

Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called

Question # 5

Photochemical smog is caused by

Question # 6

Which one is the most toxic?

Question # 7

The region of earth capable of supporting life is

Question # 8

A single chlorine free radical can destroy how many ozone molecules

Question # 9

Eutrophication causes reduction in

Question # 10

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

Question # 11

Chief air pollutant which is likely to deplete ozone layer

Question # 12

The amount of oxygen in the lithosphere is about

Question # 13

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

Question # 14

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

Question # 15

Ultraviolet radiation from sun causes a reaction that produces

Question # 16

Which causes water pollution?

Question # 17

What is the cause of water pollution

Question # 18

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 19

Which gas is not a constituent of atmosphere

Question # 20

Drained sewage has B.O.D

Question # 21

Burning of fossil fuels is the main source of pollution

Question # 22

The film forming components of paints are

Question # 23

Which is not the affect of polluted air on environment

Question # 24

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 # 25

Carbon monoxide is pollutant as it

Question # 26

Ozone hole refers to

Question # 27

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

Question # 28

Oceans cove ______ percent of the surface of the earth

Question # 29

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 # 30

NO and NO2gases in atmosphere are represented 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 Swage water is purified by
A. Microorganisms
B. Light
C. Fishes
D. Aquatic plants
2 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
3 Water pollution is mainly due to
A. Sulphure dioxide
B. Carbon dioxide
C. Oxygen
D. Industrial discharges
4 The toxic organic compounds and heavy metals and metalloids results in contamination of
A. Surface water
B. Ground water
C. Both surface and ground water
D. Neither surface nor ground waters
5 Burning of fossil fuels is the main source of pollution
A. Nitrogen oxide
B. Nitric oxide
C. Nitrous oxide
D. Sulphur dioxide
6 Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due
A. Combining with oxygen to form carbon dioxide
B. Destruction of hemoglobin
C. Preventing reaction between oxygen and hemoglobin
D. Forming stable compound with hemoglobin
7 Polycyolic aromatic hydrocarbons are taught to be
A. Disinfectant
B. Carcinogenic
C. Helpful
D. Reactive
8 DDT is
A. Biodegradable pollutant
B. Nondegradable pollutant
C. Not a pollutant
D. An antibiotic
9 A pollutant affects
A. Human health
B. Quality of life
C. Functioning of ecosystem
D. All of these
10 In incinerating the waste is burnt at
A. 1000°C
B. 100°C
C. 2000°C
D. 1500°C

Test Questions

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!