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	When chlorofluoro carbon are subjected to U.V they form	A. Cations B. Aninons C. Free radicals D. None of these
2	The amount of Si in the lithosphere is about	A. 27.72% B. 30.35% C. 35.30% D. 40.21%
3	Which one of the following is used as coagulant for purification potable water	A. Copper sulphate B. Alum C. Barium sulphate D. Nickel sulphate
4	Chemicals used to kill fungi are:	A. Herbicides B. Insecticides C. Pesticides D. fungicides
5	BOD means	A. Boron oxygen deuterium B. Biochemical oxygen demand C. Biochemical oxygen dissolved D. Biochemical oxygen death
6	The percentage of SO₂ produced by volcanoes is:	A. 47% B. 57% C. 67% D. 77%
7	Acidification of soil can leach metal:	A. Al B. Hg C. Pb D. Ca
8	How many times a newspaper can be recycled	A. 02 B. 05 C. 08 D. 10
9	Surface and ground water sources are contaminated by various human activities. Which of the following is not a human activity that causes contamination in fresh water	A. Rain B. Live stock waste C. Oil leaks and spills D. Disposal of industrial effluents
10	Hydrocarbons, SO₂, CO, NH₃nitrogen oxides and compounds of fluorine are called	A. Primary pollutant B. Secondary pollutant C. Tertiary pollutant D. None of these

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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

The pH range of acid rain is?

Ecosystem is a smaller unity of

Which gas is not a constituent of atmosphere?

Chloroform is carcinogenic:

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

Commonly used coagulants are ions of:

COD of water can be measured by

Suspended matter is settled in purification of water by:

Acidification of soil can leach metal:

The pH of the rain water in areas where acid rain is the cause of pollution may be

In Purification of potable water the coagulant used is

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

How many times a newspaper can be recycled

Which is the following is true about galvanic cell:

Ozone acts as:

A single chlorine free radical can destory how many ozone molecules

Ozone layer is

Lithosphere extends upto kilometer of earth crust in depth:

The region of earth capable of supporting life is

Chemicals used to kill pests are:

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

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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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