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	SO₂and NO₂cause pollution due to increase in	A. Buffer action B. Basicity C. Acidity D. Neutrality
2	What is the morality of a solution containing 15g of urea is 500cm³ of solution?	A. 1M B. 0.5M C. 2M D. 1.5M
3	The % of CO₂in the atmosphere is	A. 3.0% B. 0.03% C. 0.3% D. 0.5%
4	Air pollution causes	A. Acid rain B. O₃ depletion C. Green House Effect D. All
5	Lead pollution is mainly due to	A. Metallic pollution B. Space pollution C. Acid rain D. Cd pollution
6	Chlorofluorocarbon, CF₂Cl₂, plays an effective role in removing O₃(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone
7	The words smog is a combination of smoke and:	A. fog B. foke C. fork D. fizzy
8	Temporary hardness can be removed by adding	A. Lime B. Carbon C. Oxygen D. Slaked lime
9	Nitrogen percentage in atmosphere is:	A. 76% B. 77% C. 78% D. 79%
10	In big/metropolitan cities, atmosphere is mostly polluted due to	A. Radioactive fall out B. Household waste C. Pesticide residue D. Automobile exhausts

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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

Which step is unnecessary for purification of water for drinking purposes

Oceans cove ____________ percent of the surface of the earth

Agriculture consumes part of fresh water:

Ecosystem is a smaller unity of

Which of the following does not contribute towards the formation of photochemical smog?

Forms of waste products:

White marble buildings are effected by?

Which one of the following is not a component of environment

The normal amount of overhead ozone is

Transportation causes to produce CO2 in atmosphere:

Hardness which can be removed by boiling is called

COD of water can be measured by

Water is purified by the process:

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

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

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

Suspended matter is settled in purification of water by:

Transformation is a cyclic process in which used plactic is

Alkali metals react viotlently with halogens:

For incineration temperature range is (in oC)

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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:

For incineration temperature range is (in ^oC)