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	Atmosphere consists of gasses:	A. N₂ B. O₂ C. Ar D. All
2	Most harmful of biosphere is	A. Deforestation B. Nuclear fail out C. Salinity D. Water logging
3	The normal amount of overhead ozone is	A. 350 DU B. 450 DU C. 400 DU D. 300 DU
4	Chlorination of water is effective for	A. Killing pathogens B. Removing dust C. Removing hardness D. Increasing oxygen content
5	Which of the following waster material is not recycled for use again	A. paper B. plastic C. hides of animals D. glass
6	Fresh water of total earth water is:	A. 1% B. 2% C. 3% D. 4%
7	Primary pollutants are:	A. oxides of sulphur B. oxides of carbon C. oxides of nitrogen D. All of these
8	Rigid rocky crust earth upto a depth of 100 km is called:	A. Atmosphere B. Hydrosphere C. Lithosphere D. All of these
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	Water is made disinfectant during purification of water to the step:	A. aeration B. coagulation C. chlorination D. treatment

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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

Sulphate aerosols cause severe respiratory problems particularly among

Transportation causes to produce CO2 in atmosphere:

Ozone layer is present in

Property due to which water acts as a universal solvent is

Water is considered pollutant when value of Do is

How much quantity of total water is available as fresh water

The normal amount of overhead ozone is about in DU:

Coagulation in the purification of water is carried out by

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

Pan is an irritant to human beings and it affects

The toxic organic compounds and heavy metals and metalloids results in contamination of

BOD means

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

99.5% mass of lithosphere is made of

Which heavy metals do not have any safe limits

Leachate contains:

Region of earth capable of supporting life is called:

Ozone in stratosphere extends upto km:

Eleven elements made part of earth mass:

Oceans, rivers, streams, leaks, polar ice caps, glaciers and group water reservoirs are included in

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

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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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Transportation causes to produce CO₂ in atmosphere: