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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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	Electropositive character increases down the groups due to:	A. Increase in atomic size of the elements B. Decrease in ionization potential C. Decreases in electromagnetically of the element D. All the above
2	Chlorination of water is effective for	A. Killing pathogens B. Removing dust C. Removing hardness D. Increasing oxygen content
3	The range of UV-B is:	A. 320 to 400 nm B. 200 to 280 nm C. 280 to 320 nm D. 50 to 400 nm
4	Addition of washing soda removes	A. Softness of water B. Temporary hardness of water C. Permanent hardness of water D. Hydrogen from water
5	Ozone is produced in regions:	A. tropical B. Polor C. antaric D. equator
6	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	A. Live stock waste B. Oil leaks and spills C. Desposal of industrial effluents D. Rain
7	Which gas is not a constituent of atmosphere?	A. Xe B. O₃ C. H₂ D. F₂
8	Which of the following air pollutant is called quiet killer	A. PAN B. CO C. NO₃ D. SO₃
9	Polar ice caps can melt due to	A. Acid rain B. Green House Effect C. Smog D. Chlorofluorocarbons
10	Nitrogen percentage in atmosphere is:	A. 76% B. 77% C. 78% D. 79%

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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

Pan is an irritant to human beings and it affects

Biological oxygen demand (BOD) is associated with

One of the environment problem is the formation of oil slicks when oil is spilled from tankers in sea water.Which treatment is suitable to remove oil slicks

Test of incomplete combustion of petrol in the presence of

Unit of ozone is?

Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water

The ozone depletion in the stratophere is mainly due to the reaction of ozone with

Ocean contains part earth's water:

Biochemical oxygen demand is the capacity of organic matter in natural water to consume oxygen

The % of CO2in the atmosphere is

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

Carbon Monoxide is:

Detergents are surfactants and they reduce the

Ecosystem is a smaller unity of

The eleventh concentration of metal cause clogs of gills in fish:

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

Nitrogen percentage in atmosphere is:

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

Water bodies are included in:

Peroxyacetylnitrate (PAN) is an irritant to human beings and it affects:

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

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Set 7

Set 8

Set 9

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

Test Questions

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Alishba

One of the environment problem is the formation of oil slicks when oil is spilled from tankers in sea water.
Which treatment is suitable to remove oil slicks

The % of CO₂in the atmosphere is