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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tahreem fatima 12 - Nov - 2022 00 Min 04 Sec 15/20
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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	The percentage of SO₂ produced by volcanoes is:	A. 47% B. 57% C. 67% D. 77%
2	DDT is a:	A. Fungicide B. Insecticide C. Herbicide D. All
3	Suspended matter is settled in purification of water by:	A. aeration B. coagulation C. chlorination D. treatment
4	The amount of Si in the lithosphere is about	A. 27.72% B. 30.35% C. 35.30% D. 40.21%
5	Contamination of water of tanning industries is due to:	A. Cr(III) B. Cr(VI) C. Mn(III) D. Mn(VII)
6	A single free chlorine redical can destroy ozone molecules upto:	A. 100000 B. 100 C. 1000 D. 10000
7	Phenomenon of acid rains gain importance in:	A. 1930s B. 1940s C. 1950s D. 1960s
8	BOD is the oxygen demand with in day(s):	A. Four B. Two C. Three D. Five
9	Nitrogen percentage in atmosphere is:	A. 76% B. 77% C. 78% D. 79%
10	Natural water is	A. Pure B. Impure C. Acts as solute D. Distilled

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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

The pH rain of acid rain is

The normal amount of overhead ozone is about in DU:

Chlorination of water is effective for

The pH range of acid rain is?

Transportation causes to produce CO2 in atmosphere:

Which one of the following does not act as pollutant

Which is unnecessary for purification of water for drinking purposes

Which is not an air pollutant

Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as

Coagulation in the purification of water is carried out by

CFCs are mainly used in industries due to

The percentage of SO2 produced by volcanoes is:

Term ozone hole is used for depletion of ozone during months of:

Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg Toxic.

Chlorofluorocarbons and aerosols are inert in sphere:

Why is carbon monoxide called as pollutant? The reason is that

Which is not a component of environment?

Men residence time of methane in atmosphere in years is:

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

BOD is the oxygen demand with in day(s):

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

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Set 7

Set 8

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

Test Questions

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Transportation causes to produce CO₂ in atmosphere:

The percentage of SO₂ produced by volcanoes is: