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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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	Half of the mass of atmosphere is concentrated above earth at the hieght of	A. 40 Km B. 25-28 Km C. 5-6 Km D. 100 Km
2	Coagulation in the purification of water is carried out by	A. Alum B. NiSO₄ C. BaSO₄ D. CuSO₄
3	Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic	A. It attaches to sulphur of the disulphide link B. Hg is a heavy metal C. Hg is liquid at room temperature D. Hg is reactive chemically
4	Rigid rocky crust earth upto a depth of 100 km is called:	A. Atmosphere B. Hydrosphere C. Lithosphere D. All of these
5	Chemicals used to kill insects are:	A. Herbicides B. Insecticides C. Pesticides D. Fungicides
6	The range of UV-B is:	A. 320 to 400 nm B. 200 to 280 nm C. 280 to 320 nm D. 50 to 400 nm
7	SO₂makes ___________ acid rains	A. carbonic acid B. Sulfuric C. Nitric acid D. All of these
8	Which gas produces air pollution?	A. oxides of sulphur B. oxides of carbon C. all of these
9	Peroxyacetylnitrate (PAN) is an irritant to human beings and it affects:	A. Eyes B. Ears C. Stomach D. Nose
10	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

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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

Rigid rocky crust earth upto a depth of 100 km is called:

NO and NO2gases in atmosphere are represented by

Ozone layer is present in

One of the environment problem is the formation of oil slicks when oil is spilled from tankers in sea water.Which treatment is suitable to remove oil slicks

Water cover earth surface more than:

During incineration temperature range of non-rotating chamber is

By the mid of 1980s depletion of total overhead ozone in antarctic region is

Hydrosphere includes

Ocean contains part earth's water:

Why a C- C bond breaks by uv light

The words smog is a combination of smoke and:

What is component of environment?

Synthetic organic pesticides formulated nowadays are more then:

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

Leachate contains:

Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water

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

Amount of ozone in atmosphere is expressed in units:

The normal amount of overhead ozone is

Unit of ozone is?

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

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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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NO and NO₂gases in atmosphere are represented by

One of the environment problem is the formation of oil slicks when oil is spilled from tankers in sea water.
Which treatment is suitable to remove oil slicks