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.

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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 of the following waste material is not recycled for use again	A. Glasses B. Paper C. Plastic toys D. Hides of animals
2	Smaller unit of biosphere is:	A. specie B. ecosystem C. plankton D. troposphere
3	How many times a newspaper can be recycled	A. 02 B. 05 C. 08 D. 10
4	Photochemical smog consists of higher concentration of:	A. Oxidants B. Ozone C. a & b D. NO₃
5	Troposphere extends upto km:	A. 0-15 km B. 10-15 km C. 15-40 km D. 15-40 km
6	Detergent greatly effects the	A. Aquatic life B. Modern life C. Terrestrial life D. Plants life
7	Biological oxygen demand (BOD) is associated with	A. Organic matter B. Micro organisms C. Both a and b D. None
8	Chromium (VI) is highly toxic and can cause	A. Blindness B. Cancer C. Liver problems D. Blood problems
9	Unit of ozone is?	A. Debye B. Dobson C. Esu D. Coulumb
10	Nitrogen in the atmosphere is:	A. 78% B. 21% C. 0.9% D. 0.03%

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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

Natural water is

Materials suspended in water or present as colloidal form in raw water are removed by:

The cause of minamata disease is the pollution of

Ozone is produced in regions:

Nitrogen in the atmosphere is:

Atmosphere consists of gasses:

Which heavy metals do not have any safe limits

COD of water can be measured by

Detergents are surfactants and they reduce the

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

Coagulation removes suspended particles in ran water:

Sea gets polluted bu accidental oil spills and

a hole used to dump the municipal wastes is called:

Ozone is effectively removed by

Chose a point which is not included in the components of environment

Ozone layer is high:

A single chlorine free radical can destory how many ozone molecules

Amount of fresh water used by agriculture is

Water exist in only

Which is not the condition for the formation of smog

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

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Set 9

Set 10

Set 11

Set 12

Set 13

Set 14

Set 15

Set 16

Set 17

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

MCAT Chemistry Chapter 21 Important MCQ's

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