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

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Munaza 11 - Oct - 2022 00 Min 07 Sec 20/20
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Sania Abbas 25 - Jul - 2022 06 Min 13 Sec 16/20
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tahreem fatima 12 - Nov - 2022 00 Min 04 Sec 15/20
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Filza Ahsan 11 - Nov - 2022 01 Min 33 Sec 15/20
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Faiz Barvi443 19 - Mar - 2023 03 Min 29 Sec 14/20
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Basit Khan 09 - Aug - 2022 06 Min 44 Sec 14/20
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Amat Nur 27 - Jun - 2023 07 Min 07 Sec 14/20
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Abdullah 11 - Apr - 2023 10 Min 50 Sec 14/20
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Dania 01 - Jan - 2023 14 Min 03 Sec 14/20
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Ali Ahmed Tauqeer 03 - Mar - 2024 03 Min 27 Sec 13/20
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Anaya 07 - Jul - 2023 04 Min 28 Sec 13/20
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Urooj Wajid 15 - Sep - 2022 06 Min 47 Sec 13/20
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Meer Sadeed 07 - Sep - 2023 10 Min 50 Sec 13/20
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Rana Ubaid Chohan 16 - Jul - 2022 10 Min 50 Sec 13/20

MCAT Chemistry Chapter 21 Important MCQ's

Sr.#	Question	Answer
1	Which factor is helping to reduce the environment pollution	A. rapid growth population B. urbanization C. idustrialization D. increase of plantation
2	Chlorofluorocarbon, CF₂Cl₂, plays an effective role in removing O₃(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone
3	During thunderstorms, water dissolves	A. Dust particles B. HCl C. Nitric acid D. Clouds
4	COD of water can be measured by	A. Cr₂O₃ B. Cr₂O₄^-2ions C. Cr₂O₇^-2ions D. None of these
5	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 reactions to take place C. air must be blowing swifty D. there must be SO₂in the air
6	Residence time of methane in the atmosphere is	A. 3 - 7 days B. 2 -3 days C. 3 - 7 years D. 2 - 3 years
7	Leachate contains:	A. fatty acids B. Bacteria C. Heavy metals D. All of these
8	Newspaper can be recycled again and again by how many times?	A. 2 B. 3 C. 4 D. 5
9	Ratio of hydrogen (H) and oxygen (O) in water molecule by volume is	A. 2: 1 B. 1: 2 C. 3: 1 D. 4: 1
10	Synthetic organic pesticides formulated nowadays are more then:	A. One thousand B. Ten thousand C. Two thousands D. Twenty thousand

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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

Which heavy metals do not have any safe limits

Ecosystem is a smaller unit of

What change in plants indicates toxic effect of SO2

When chlorofluoro carbon are subjected to U.V they form

Ozone is an allotropic form of:

The semi solid wastes in landfills is called:

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

A single chloride free redical can destroy bow many ozene molecules?

Men residence time of methane in atmosphere in years is:

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

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

Chemicals used to kill herbs are:

The yellow color present in the photo chemical smog is due to presence of the

What is the effect of polluted air on environment

The suspended particles in the raw water can be removed by the

The scope of environmental chemistry is to study:

Water cover earth surface more than:

Chlorofluorocarbon, CF2Cl2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone

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

Detergents are surfactants and they reduce the

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

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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

What change in plants indicates toxic effect of SO₂

Chlorofluorocarbon, CF₂Cl₂, plays an effective role in removing O₃(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone

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