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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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	Soil remediation means	A. to make it suitable for cultivation of crops B. to make it acidic C. to make it alkeline D. to add manure into it
2	Ocean contains part earth's water:	A. 95% B. 96% C. 97% D. 98%
3	Polar ice caps and glaciers consists total earth water:	A. 1% B. 2% C. 3% D. 4%
4	The normal amount of overhead ozone is about	A. 250 Du B. 300 DU C. 350 DU D. 400 DU
5	CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destory	A. 50,000 B. 10,000 C. 20,000 D. None of these
6	Pan is an irritant to human beings and it affects	A. Eyes B. Nose C. Hair D. Skin
7	The temperature in the incineration process has a range:	A. 900 to 1000°C B. 650 to 1100°C C. 950 to 1300°C D. 500 to 900°C
8	NO and NO₂gases in atmosphere are represented by	A. NO B. NO₄ C. NO_x D. N_xO_y
9	Oceans, rivers, streams, leaks, polar ice caps, glaciers and group water reservoirs are included in	A. Atmosphere B. Lithosphere C. Hydrosphere D. Biosphere
10	Hard water can block radiators due to formation of	A. Insoluble calcium and magnesium salts B. Insoluble sodium salts C. In soluble phosphate salts D. Insoluble potassium salts

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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

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

The water is considered to be polluted when the concentration of oxygen in it is

The concentration of dissolved molecular oxygen in water which acts as the most important oxidizing agent ranges from

Ozone layer is

How many times a newspaper can be recycled

Biochemical oxygen demand (BOD) is the capacity of organic matter in natural water to consume oxygen with in a period of

The yellow color present in the photo chemical smog is due to presence of the

Suspended matter is settled in purification of water by:

CFC's are known to cause depletion of ozone layer therefore their use has been banned in refrigerators and air conditioners. Which alternate compound may be suitable to replace CFC

Which step is unnecessary for purification of water for drinking purposes

The scope of environmental chemistry is to study:

Water which forms scum with soap is called

In addition to many pollutants present in ground water, a successful study was conducted to remove a highly Toxic chemical.What chemical is this

The cause of minamata disease is the pollution of

a hole used to dump the municipal wastes is called:

Ozone is produced in regions:

Diseases like dysentery, typhoid and hepatitis are caused by mixing of in water:

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

Surface and ground water sources are contaminated by various human activities. Which of the following is not human activity that causes contamination in fresh water

Term ozone hole is used for depletion of ozone during months of:

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

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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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