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

Which gas is not a constituent of atmosphere

Question # 2

The normal amount of overhead ozone is about

Question # 3

Fungicides are the pesticides which

Question # 4

Ozone hole refers to

Question # 5

Which one of the following is not air pollutant gas

Question # 6

Depletion of ozone layer is due to

Question # 7

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

Question # 8

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 # 9

Photochemical smog is caused by

Question # 10

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

Question # 11

In the atmosphere, CO2is about

Question # 12

Which step is unnecessary for purification of water for drinking purposes

Question # 13

Chief air pollutant which is likely to deplete ozone layer

Question # 14

Chloroflurocarbon releases a chemical harmful to ozone

Question # 15

Pick up the correct statement

Question # 16

Biodegradable pollutant is

Question # 17

Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone

Question # 18

Which is not the affect of polluted air on environment

Question # 19

In purification of potable water the coagulant used is

Question # 20

The largest item which is recycled is

Question # 21

Domestic waste mostly constitutes

Question # 22

Polycyolic aromatic hydrocarbons are taught to be

Question # 23

UV radiations bring about

Question # 24

Air pollution is not caused by

Question # 25

Phosphate pollution is caused by

Question # 26

Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water

Question # 27

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

Question # 28

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

Question # 29

Oceans cove ______ percent of the surface of the earth

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 What is the cause of water pollution
A. Chemical and bacterial contents in live stock
B. The spilled oil in rivers and ponds
C. Wide spread use of pesticides
D. All of the above
2 Cyclone collector is used for minimizing
A. Radioactive pollution
B. Air pollution
C. Noise pollution
D. Water pollution
3 Chief source of water and soil pollution is
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above
4 Acid rains are produced by
A. Excess NO2and SO2 from burining fossil fuels
B. Excess production of NH3by industry and coal gas
C. Excess release of carbon monoxide by incomplete combustion
D. Excess formation of CO2by combustion and animal respiration
5 Which of the following human activities are contaminating surface and ground waters
A. Pesticides
B. Septic tanks
C. Petroleum and natural gas production
D. All of these
6 Oceans cove ______ percent of the surface of the earth
A. 60
B. 70
C. 80
D. 97
7 Environmental pollution affects
A. Biotic components
B. Plants only
C. Man only
D. Biotic and abiotic components of environment
8 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
9 Which of the following forms a toxic substance in blood by combing with hemoglobin?
A. Carbon dioxide
B. Carbon monoxide
C. Oxygen
D. Methane
10 Result of ozone hole is
A. Green house effect
B. Global warming
C. Acid rain
D. UV rays reach the earth

Test Questions

Is this page helpful?