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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
Leather tanneries use big auantities of:
Question # 2
Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic
Question # 3
Photo chemical smog contains ______ as main reactants
Question # 4
A single chloride free redical can destroy bow many ozene molecules?
Question # 5
Water is essential for life on
Question # 6
Alkali metals react viotlently with halogens:
Question # 7
Depletion of ozone is more during the month:
Question # 8
Ozone is most of the tropical regions acts as a pollutant and causes
Question # 9
Fungicides are the pesticides which:
Question # 10
Water is purified by:
Question # 11
The process of coagulation can remove suspended solids in raw water about
Question # 12
Which is property of CO?
Question # 13
The percentage of SO2 produced by volcanoes is:
Question # 14
Which of the following substance is not present in acid rain?
Question # 15
Which one of the following is an organic compound?
Question # 16
Newspapers can be recycled again and again by how many times
Question # 17
Splitting of spectral lines when atoms are subjected to strong electric field is called:
Question # 18
What is the morality of a solution containing 15g of urea is 500cm3 of solution?
Question # 19
Ozone layer is present in
Question # 20
Photochemical smog consists of higher concentration of:
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
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Set 6
20 Questions
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Set 7
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Set 8
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Set 9
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Set 10
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Set 11
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Set 12
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Set 13
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Set 14
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Set 15
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Set 16
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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 -
A Anaya 07 - Jul - 2023 04 Min 28 Sec 13/20 -
U Urooj Wajid 15 - Sep - 2022 06 Min 47 Sec 13/20 -
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 | 0.1M HCI having pH =1.0 it is about 100 time stronger than acetic acid what will be the pH of acetic acid: |
A. 0.1
B. 1.3
C. 2
D. 3
|
| 2 | Ecosystem is a smaller unit of |
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
|
| 3 | The pH range of acid rain is? |
A. 7-6.5
B. 6.5-6
C. 6-5.6
D. Less than 5
|
| 4 | Which step is unnecessary for purification of water for drinking purposes |
A. aeration
B. coagulation
C. treatment with chlorine
D. treatment with iodine
|
| 5 | Phenomenon of acid rains gain importance in: |
A. 1930s
B. 1940s
C. 1950s
D. 1960s
|
| 6 | A pollutant affects |
A. Human affects
B. Quality of life
C. Functioning of ecosystem
D. All of these
|
| 7 |
The pH range of acid rain is?
|
A. 7-6.5
B. 6.5-6
C. 6-5.6
D. Less than 5
|
| 8 | The main pollutant of leather in the waste water is due to the salt of: |
A. Lead
B. Chromium (VI)
C. Copper
D. Chromium (III)
|
| 9 | Biochemical oxygen demand (BOD) is the capacity of organic matter in natural water to consume oxygen with in a period of |
A. 2 day
B. 6 day
C. 5 day
D. 7 day
|
| 10 | In big/metropolitan cities, atmosphere is mostly polluted due to |
A. Radioactive fall out
B. Household waste
C. Pesticide residue
D. Automobile exhausts
|
Test Questions