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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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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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	Chemicals used to kill pests are:	A. Herbicides B. Insecticides C. Pesticides D. fungicides
2	Photo chemical smog contains ______ as main reactants	A. Nitrons oxide and unburnt hydrocarbons B. Nilric oxide and unburnt hydrocarbons C. No and burnt hydrocarbons D. N₂O and burnt hydrocarbons
3	Ozone layer is present in	A. Troposphere B. Stratosphere C. Mesosphere D. Ionosphere
4	The layer of earth around the earth is called:	A. Atmosphere B. Hydrosphere C. Lithosphere D. Biosphere
5	The percentage of SO₂ produced by volcanoes is:	A. 47% B. 57% C. 67% D. 77%
6	Petroleum or crude oil is a complex mixture of compounds mainly:	A. benzene B. minerals C. hydrocarbons D. phenols
7	Out of total amount of water available for human use is	A. 0.30% B. 0.2% C. 40% D. 50%
8	The reason of acid rains is	A. Release of CO in excess by in complete combustion B. Excess release of NO₂and SO₂from buring of fossil fules C. Formation of excess CO₂due to combustion and respiration D. Formation of NH₃in excess from industry and coal gas
9	Contaminated soil can be cleaned by various methods. Which method is not used to clean the soil	A. diffusion B. convection C. electrophoresis D. chromatography
10	Which of the following waster material is not recycled for use again	A. paper B. plastic C. hides of animals D. glass

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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

Industrial effluents have toxic synthetic organic compounds as well as heavy metals like

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

Newspaper can be recycled again and again by how many times?

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

The bonding occurs among polar covalent molecules containing H and one of the small electronegative element such as O,F or N is called:

Ecology is a science of environment and deals specially with

The range of UV-B is:

Pan is an irritant to human beings and it affects

The overall effect of the photochemical smog in the after noon is built up of

Men residence time of methane in atmosphere in years is:

Solid waster of the city is disposed off by dumping in a landfill. Which of the following gas is produced in the landfill

A chemist says that glass must be a super cooled liquid. the reason that he might have in his mind is that glass has:

Chemical like Al2(SO4) or alum are used in purification of water druing step:

HOCl is a compound:

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

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

Ozone is produced in regions:

How much quantity of total water is available as fresh water

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

Polar ice caps and glaciers consists total earth water:

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

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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

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

Chemical like Al₂(SO₄) or alum are used in purification of water druing step: