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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Munaza 11 - Oct - 2022 00 Min 07 Sec 20/20
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Sania Abbas 25 - Jul - 2022 06 Min 13 Sec 16/20
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tahreem fatima 12 - Nov - 2022 00 Min 04 Sec 15/20
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Filza Ahsan 11 - Nov - 2022 01 Min 33 Sec 15/20
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Faiz Barvi443 19 - Mar - 2023 03 Min 29 Sec 14/20
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Basit Khan 09 - Aug - 2022 06 Min 44 Sec 14/20
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Amat Nur 27 - Jun - 2023 07 Min 07 Sec 14/20
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Abdullah 11 - Apr - 2023 10 Min 50 Sec 14/20
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Dania 01 - Jan - 2023 14 Min 03 Sec 14/20
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Ali Ahmed Tauqeer 03 - Mar - 2024 03 Min 27 Sec 13/20
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Anaya 07 - Jul - 2023 04 Min 28 Sec 13/20
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Urooj Wajid 15 - Sep - 2022 06 Min 47 Sec 13/20
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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	Lithosphere extends upto kilometer of earth crust in depth:	A. 10 km B. 100 km C. 1000 km D. 10000 km
2	Ocean contains part earth's water:	A. 95% B. 96% C. 97% D. 98%
3	The normal amount of overhead ozone is about	A. 250 Du B. 300 DU C. 350 DU D. 400 DU
4	Water in swimming pools is purified by adding	A. Sodium B. Chlorine C. Phosphorus D. Potassium
5	NO and NO₂gases in atmosphere are represented by	A. NO B. NO₄ C. NO_x D. N_xO_y
6	Primary pollutants are:	A. oxides of sulphur B. oxides of carbon C. oxides of nitrogen D. All of these
7	How much quantity of total water is available as fresh water	A. 3% B. 1% C. 10% D. 21%
8	Which of the following is a macronutrient?	A. Boron B. Iron C. Copper D. Carbon
9	Photochemical smog consists of higher concentration of:	A. Oxidants B. Ozone C. a & b D. NO₃
10	In purification of potable water the coagulant used is:	A. Nickel sulphate B. Copper sulphate C. Barium sulphate D. Aluminium sulphate

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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

Augus smith discovered in the mid of seventeenth century:

Chemical like Al2(SO4) or alum are used in purification of water druing step:

Ozone is effectively removed by

SO2 produced by volcanoes is about

Chlorofluorocarbons and aerosols are inert in sphere:

Ecosystem is a smaller unit of

The normal amount of overhead ozone is about in DU:

The words smog is a combination of smoke and:

Hard water can block radiators due to formation of

Photo chemical smog contains ______ as main reactants

Water which his considered to be safe for human consumption is known as

Lead pollution is mainly due to

Transformation is a cyclic process in which used plactic is

The cause of minamata disease is the pollution of

Ozone in most of the tropical regions acts as a pollutant and cause

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

Amount of fresh water used by agriculture is

Major cause of SO2 on global scale is

Chlorination of water is effective for

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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Chemical like Al₂(SO₄) or alum are used in purification of water druing step:

SO₂produced by volcanoes is about