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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
Which is the following is true about galvanic cell:
Question # 3
A single chlorine free radical can destroy how many ozone molecules
Question # 4
Which is not the affect of polluted air on environment
Question # 5
Ozone layer is
Question # 6
The disposal of domestic refuse, commercial and industrial solid wastes are studied under the title
Question # 7
Hardness which can be removed by boiling is called
Question # 8
Proxy acetyl nitrate (PAN) is an irritant to human beings and it affect
Question # 9
Photochemical smog consists of higher concentration of:
Question # 10
NO and NO2gases in atmosphere are represented by
Question # 11
Ozone is produced in regions:
Question # 12
Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic
Question # 13
Which is unnecessary for purification of water for drinking purposes
Question # 14
Hydrocarbons, SO2, CO, NH3nitrogen oxides and compounds of fluorine are called
Question # 15
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 # 16
Hydrosphere includes
Question # 17
A single chloride free redical can destroy bow many ozene molecules?
Question # 18
Water is considered pollutant when value of Do is
Question # 19
The pH range of acid rain is?
Question # 20
What is component of environment?
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
20 Questions
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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 -
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 | A single chloride free redical can destroy bow many ozene molecules? |
A. 100
B. 100000
C. 10000
D. 10
|
| 2 | Polycyclic aromatic hydrocarbons are taught to be |
A. Disinfectant
B. Carcinogenic
C. Helpful
D. Reactive
|
| 3 | The concentration of dissolved molecular oxygen in water which acts as the most important oxidizing agent ranges from |
A. 2 ppm - 6 ppm
B. 2 ppm - 4 ppm
C. 4 ppm - 8 ppm
D. 2 ppm - 3 ppm
|
| 4 | 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
|
| 5 | The suspended particles in the raw water can be removed by the |
A. Coagulation
B. Aeration
C. Hydration
D. Dehydration
|
| 6 | DDT is a: |
A. Fungicide
B. Insecticide
C. Herbicide
D. All
|
| 7 | Biological oxygen demand (BOD) is associated with |
A. Organic matter
B. Micro organisms
C. Both a and b
D. None
|
| 8 | Lanthanides an actinides belong to following group of periodic table: |
A. IB
B. VIIIB
C. IIB
D. IIIB
|
| 9 | The normal amount of overhead ozone is about in DU: |
A. 150
B. 250
C. 350
D. 450
|
| 10 | Boron, aluminium, gallium, indium and thallium belong to group lll-A of the periodic table show a decrease with increasing relative atomic mass: |
A. Ionic character of the compounds
B. The first ionization energy
C. The basic character of the oxides
D. The stability of +2 oxidation
|
Test Questions