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 layer of earth around the earth is called:	A. Atmosphere B. Hydrosphere C. Lithosphere D. Biosphere
2	Ozone in stratosphere extends upto km:	A. 0-15 km B. 10-15 km C. 15-40 km D. 15-25 km
3	Chemicals used to kill pests are:	A. Herbicides B. Insecticides C. Pesticides D. fungicides
4	Smaller unit of biosphere is:	A. specie B. ecosystem C. plankton D. troposphere
5	The percentage of SO₂ produced by volcanoes is:	A. 47% B. 57% C. 67% D. 77%
6	Insoluble ferric oxide is produced in the pH range:	A. 1 to 8 B. 6 to 9 C. 3 to 13 D. 8 to 13
7	Suspended matter is settled in purification of water by:	A. aeration B. coagulation C. chlorination D. treatment
8	Water which forms scum with soap is called	A. Hard water B. Soft water C. Distilled water D. Un distilled water
9	Water is purified by:	A. Filtration B. aeration C. coagualation D. All of these
10	Polar ice caps and glaciers consists total earth water:	A. 1% B. 2% C. 3% D. 4%

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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

Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will not cause water pollution

The layer of gases around the earth are called?

Fungicides are the pesticides which:

Primary pollutants are:

Hydrosphere includes

Which is not considered as pollutant

Which is not the condition for the formation of smog

Sea gets polluted bu accidental oil spills and

The main pollution of leather tanneries in the waste is due to the salt of

The words smog is a combination of smoke and:

Which of the following waster material is not recycled for use again

Water which forms scum with soap is called

In Purification of potable water the coagulant used is

Depletion of ozone is more during the month:

BOD is the oxygen demand with in day(s):

Amount of ozone in atmosphere is expressed in units:

A single chloride free redical can destroy bow many ozene molecules?

Hydrosphere covers the surface of erath:

Water bodies are included in:

Coal contains percentage of sulphur:

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

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Set 8

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Set 10

Set 11

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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