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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.
MCQ's Test For MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test
Try The MCQ's Test For MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test
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Total Questions20
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Time Allowed20
MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test
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Question # 1
Amount of ozone in atmosphere is expressed in units:
Question # 2
Water in swimming pools is purified by adding
Question # 3
Ocean contains part earth's water:
Question # 4
Photo chemical smog contains ______ as main reactants
Question # 5
Which of the following is not a heavy industry?
| Which of the following is not a heavy industry? |
Question # 6
Augus smith discovered in the mid of seventeenth century:
Question # 7
A chemist says that glass must be a super cooled liquid. the reason that he might have in his mind is that glass has:
Question # 8
Forms of waste products:
Question # 9
In purification of potable water the coagulant used is:
Question # 10
Water which his considered to be safe for human consumption is known as
Question # 11
Troposphere extends upto km:
Question # 12
Which is not the condition for the formation of smog
Question # 13
The layer of gases around the earth are called?
Question # 14
Which is used as a coagulant:
Question # 15
Electropositive character increases down the groups due to:
Question # 16
CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destory
Question # 17
During thunderstorms, water dissolves
Question # 18
Oceans, rivers, streams, leaks, polar ice caps, glaciers and group water reservoirs are included in
Question # 19
Out of total amount of water available for human use is
Question # 20
Which of the following is not a secondary pollutant
| Which of the following is not a secondary pollutant |
Prepare Complete Set Wise MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test MCQs Online With Answers
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Set 1
20 Questions
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Set 2
20 Questions
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Set 3
20 Questions
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Set 4
20 Questions
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Set 5
20 Questions
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Set 6
20 Questions
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Set 7
20 Questions
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Set 8
20 Questions
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Set 9
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Set 10
20 Questions
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Set 11
20 Questions
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Set 12
20 Questions
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Set 13
20 Questions
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Set 14
20 Questions
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Set 15
20 Questions
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Set 16
20 Questions
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Set 17
3 Questions
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Top Scorers Of MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test MCQ`s Test
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M Munaza 11 - Oct - 2022 00 Min 07 Sec 20/20 -
L Laiba Khan 24 - Jul - 2022 02 Min 18 Sec 16/20 -
S Sania Abbas 25 - Jul - 2022 06 Min 13 Sec 16/20 -
T tahreem fatima 12 - Nov - 2022 00 Min 04 Sec 15/20 -
F Filza Ahsan 11 - Nov - 2022 01 Min 33 Sec 15/20 -
F Faiz Barvi443 19 - Mar - 2023 03 Min 29 Sec 14/20 -
B Basit Khan 09 - Aug - 2022 06 Min 44 Sec 14/20 -
A Amat Nur 27 - Jun - 2023 07 Min 07 Sec 14/20 -
A Abdullah 11 - Apr - 2023 10 Min 50 Sec 14/20 -
D Dania 01 - Jan - 2023 14 Min 03 Sec 14/20 -
A Ali Ahmed Tauqeer 03 - Mar - 2024 03 Min 27 Sec 13/20 -
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M Meer Sadeed 07 - Sep - 2023 10 Min 50 Sec 13/20 -
R Rana Ubaid Chohan 16 - Jul - 2022 10 Min 50 Sec 13/20
MCAT Chemistry Chapter 21 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | The normal amount of overhead ozone is about in DU: |
A. 150
B. 250
C. 350
D. 450
|
| 2 | Ozone is most of the tropical regions acts as a pollutant and causes |
A. Damages to eyes
B. Aggravates asthma
C. Chest discomfort
D. All of these
|
| 3 | Which one of the following does not act as pollutant |
A. Carbon monoxide
B. Sulphur dioxide
C. Hydrocarbons
D. Carbon dioxide
|
| 4 | Ozone layer is |
A. 25 - 28 km high
B. 26 - 29 km high
C. 24 - 27 km high
D. 20 - 28 km high
|
| 5 | Which is not a component of environment? |
A. Biosphere
B. Lithosphere
C. Hydrosphere
D. None of these
|
| 6 | The normal amount of overhead ozone is |
A. 350 DU
B. 450 DU
C. 400 DU
D. 300 DU
|
| 7 | NO and NO2gases in atmosphere are represented by |
A. NO
B. NO4
C. NOx
D. NxOy
|
| 8 | Smaller unit of biosphere is: |
A. specie
B. ecosystem
C. plankton
D. troposphere
|
| 9 | Addition of washing soda removes |
A. Softness of water
B. Temporary hardness of water
C. Permanent hardness of water
D. Hydrogen from water
|
| 10 | Coagulation removes suspended particles in ran water: |
A. 60%
B. 70%
C. 80%
D. 90%
|
Test Questions