MDCAT Chemistry Chapter 21 online mcq test with answers for chapter 21 (Environmental Chemistry)

Chapter 21 is an important part of MDCAT Chemistry that covers polymers and biological macromolecules. It includes the formation and uses of addition polymers like polyethene, polystyrene, and polyvinyl chloride (PVC), as well as condensation polymers such as polyesters (terylene) and polyamides (nylon-6,6). Understanding these topics helps students grasp how small molecules combine to form large, useful materials found in everyday life.

This chapter also explains the structure of proteins , including their primary and secondary structures , and the structure and function of nucleic acids (DNA) , which carry genetic information. By attempting the MDCAT Chemistry Chapter 21 MCQ Test with Answers , students can review key concepts, check their understanding, and strengthen their preparation for the exam.

Top Scorers Of MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test MCQ`s Test

M

Munaza 11 - Oct - 2022 00 Min 07 Sec 20/20
L

Laiba Khan 24 - Jul - 2022 02 Min 18 Sec 16/20
S

Sania Abbas 25 - Jul - 2022 06 Min 13 Sec 16/20
T

tahreem fatima 12 - Nov - 2022 00 Min 04 Sec 15/20
F

Filza Ahsan 11 - Nov - 2022 01 Min 33 Sec 15/20
F

Faiz Barvi443 19 - Mar - 2023 03 Min 29 Sec 14/20
B

Basit Khan 09 - Aug - 2022 06 Min 44 Sec 14/20
A

Amat Nur 27 - Jun - 2023 07 Min 07 Sec 14/20
A

Abdullah 11 - Apr - 2023 10 Min 50 Sec 14/20
D

Dania 01 - Jan - 2023 14 Min 03 Sec 14/20
A

Ali Ahmed Tauqeer 03 - Mar - 2024 03 Min 27 Sec 13/20
A

Anaya 07 - Jul - 2023 04 Min 28 Sec 13/20
U

Urooj Wajid 15 - Sep - 2022 06 Min 47 Sec 13/20
M

Meer Sadeed 07 - Sep - 2023 10 Min 50 Sec 13/20
R

Rana Ubaid Chohan 16 - Jul - 2022 10 Min 50 Sec 13/20

MCAT Chemistry Chapter 21 Important MCQ's

Sr.#	Question	Answer
1	Surface and ground water sources are contaminated by various human activities. Which of the following is not a human activity that causes contamination in fresh water	A. Rain B. Live stock waste C. Oil leaks and spills D. Disposal of industrial effluents
2	Biochemical oxygen demand (BOD) is the capacity of organic matter in natural water to consume oxygen with in a period of	A. 2 day B. 6 day C. 5 day D. 7 day
3	Biological oxygen demand (BOD) is associated with	A. Organic matter B. Micro organisms C. Both a and b D. None
4	Diseases like dysentery, typhoid and hepatitis are caused by mixing of in water:	A. Live stock wastes B. Oil spilage C. detergents D. pesticides
5	alum or aluminium sulphate used as coagulant in alkaline medium change into precipitate of radicals of alumimium.	A. sulphates B. oxides C. hydroxides D. chlorides
6	Coagulation in the purification of water is carried out by	A. Alum B. NiSO₄ C. BaSO₄ D. CuSO₄
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	Ozone gas has boiling point:	A. Low B. High C. Medium D. Highest
9	Which of the following waster material is not recycled for use again	A. paper B. plastic C. hides of animals D. glass
10	Choose the chief air pollutant among the following which depletes ozone layer	A. Carbon monoxide B. Carbon dioxide C. Chloroflurocarbons and nitrogen oxides D. Sulphur dioxide

Latest Educational News Stories

Pakistan's Largest Database of Colleges and Universities

BS Programs

University Past Papers

University Results

Exam Results 2024

Study Abroad Programs and Opportunities for Pakistani Students

MDCAT Chemistry Chapter 21 MCQ Test With Answer for (Environmental Chemistry)

MCQ's Test For MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test

MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test

The percentage of SO2 produced by volcanoes is:

Ozone is a gas having boiling point

Hard water can block radiators due to formation of

Nitrogen percentage in atmosphere is:

Residence time of methane in the atmosphere is

The temperature of in the incineration of industrial and hazardous waste process has range

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

Leather tanneries use big auantities of:

A single free chlorine redical can destroy ozone molecules upto:

Suspended matter is settled in purification of water by:

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

Which gases are produced from landfills?

Polar ice caps can melt due to

Water cover earth surface more than:

Which is used as a coagulant:

Lithosphere has amount of silicon

How many times a newspaper can be recycled

Leachate contains:

In purification of potable water the coagulant used is:

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

Prepare Complete Set Wise MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test MCQs Online With Answers

Set 1

Set 2

Set 3

Set 4

Set 5

Set 6

Set 7

Set 8

Set 9

Set 10

Set 11

Set 12

Set 13

Set 14

Set 15

Set 16

Set 17

Topic Test

Top Scorers Of MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test MCQ`s Test

MCAT Chemistry Chapter 21 Important MCQ's

Test Questions

Is this page helpful?

Share your comments & questions here

maryam

Alishba

Alishba

The percentage of SO₂ produced by volcanoes is: