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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MCAT Chemistry Chapter 21 Important MCQ's

Sr.#	Question	Answer
1	The ozone depletion in the stratophere is mainly due to the reaction of ozone with	A. Freons B. CFCs C. Both A and B D. None
2	Natural water is	A. Pure B. Impure C. Acts as solute D. Distilled
3	Coal contains sulphur in it:	A. 1-3% B. 1-6% C. 1-9% D. 1-12%
4	Organic pollutants in water are measured by	A. DO B. COD C. Water logging D. PH
5	Which one of the following is not air pollutant gas	A. CO B. CO₂ C. NO D. SO₂
6	Which is unnecessary for purification of water for drinking purposes	A. Coagulation B. Aeration C. Treatment with Iodine D. Treatment with chlorine
7	Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water	A. low value B. higher value C. both values D. none of these
8	Which gas produces air pollution?	A. oxides of sulphur B. oxides of carbon C. all of these
9	Heat balance of earth is maintained by sphere:	A. Hydrosphere B. atmosphers C. lithosphere D. biosphere
10	Sulphate aerosols cause severe respiratory problems particularly among	A. Infants B. Women C. Young people D. Old people

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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

Newspapers can be recycled again and again by how many times

Hydrosphere includes

Hydrosphere covers the surface of erath:

Which of the following is a macronutrient?

Heat balance of earth is maintained by sphere:

Polar ice caps can melt due to

The normal amount of overhead ozone is about in DU:

The gases in the atmosphere are essential for sustaining life on earth. Thus oxygen is required for breathing. What for is carbon dioxide required

The rigid rocky part of earth crust called lithosphere extends upto a depth of:

The percentage of SO2 produced by volcanoes is:

Requirement of macronutrient per acre of the land is

Elevated concentration of ______________ is harmful for fish as it clog the gills causing suffocation

Coal contains sulphur in it:

The process of coagulation can remove suspended solids in raw water about

Synthetic organic pesticides formulated nowadays are more then:

Forms of waste products:

Ozone acts as:

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

NO and NO2gases in atmosphere are represented by

Hydrocarbons, SO2, CO, NH3nitrogen oxides and compounds of fluorine are called

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

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Set 12

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Set 14

Set 15

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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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The percentage of SO₂ produced by volcanoes is:

NO and NO₂gases in atmosphere are represented by

Hydrocarbons, SO₂, CO, NH₃nitrogen oxides and compounds of fluorine are called