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	What is the effect of polluted air on environment	A. Ozone B. Acid rain C. Global warming D. Smog
2	Hydrocarbons, SO₂, CO, NH₃nitrogen oxides and compounds of fluorine are called	A. Primary pollutant B. Secondary pollutant C. Tertiary pollutant D. None of these
3	The cause of minamata disease is the pollution of	A. Arsenic (As) into atomosphere B. Industrial waste having Hg C. Organic waste in drinking H₂O D. Oil spills in H₂O
4	Heat balance of earth is maintained by	A. Atmosphere B. Hydrosphere C. Lithosphere D. Stratosphere
5	Primary pollutants are:	A. oxides of sulphur B. oxides of carbon C. oxides of nitrogen D. All of these
6	Which is property of CO?	A. Soluble in water B. Insoluble in water C. No toxic D. Pole coloured
7	Which gases are produced from landfills?	A. NH₃ B. H₂S C. N₂ D. All of these
8	DDT is a:	A. Fungicide B. Insecticide C. Herbicide D. All
9	Region of earth capable of supporting life is called:	A. Atmosphere B. Hydrosphere C. Lithosphere D. All of these
10	Which one of the following is used as coagulant for purification potable water	A. Copper sulphate B. Alum C. Barium sulphate D. Nickel sulphate

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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

Cyclone collector is used to reduce

How many times a newspaper can be recycled

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

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

Coal contains percentage of sulphur:

How much pesticides have been synthesized at present?

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

The range of UV-B is:

Polar ice caps can melt due to

Which step is unnecessary for purification of water for drinking purposes

Which factor is helping to reduce the environmental pollution

The most important pesticides are:

Water which forms scum with soap is called

Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will not cause water pollution

Water is considered pollutant when value of Do is

CFCs are mainly used in industries due to

Leather tanneries use big auantities of:

During thunderstorms, water dissolves

Biochemical oxygen demand is the capacity of organic matter in natural water to consume oxygen

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

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

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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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