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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
The cause of minamata disease is the pollution of
Question # 2
Out of total amount of water available for human use is
Question # 3
Men residence time of methane in atmosphere in years is:
Question # 4
How many times a newspaper can be recycled
Question # 5
Site of land for landfill is selected based upon.
Question # 6
Materials suspended in water or present as colloidal form in raw water are removed by:
Question # 7
The smog having high contents of SO2is
Question # 8
Chemicals used to kill fungi are:
Question # 9
Why a C- C bond breaks by uv light
Question # 10
Water exist in only
Question # 11
Which of the following waster material is not recycled for use again
Question # 12
Water is essential for life on
Question # 13
Biochemical oxygen demand (BOD) is the capacity of organic matter in natural water to consume oxygen with in a period of
Question # 14
What change in plants indicates toxic effect of SO2
Question # 15
Nitrogen percentage in atmosphere is:
Question # 16
Which one is more toxic?
Question # 17
In purification of potable water the coagulant used is:
Question # 18
The eleventh concentration of metal cause clogs of gills in fish:
Question # 19
Which one of the pollutants of automobile exhausts affects the nervous system or produces mental diseases
Question # 20
Synthetic organic pesticides formulated nowadays are more then:
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
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Set 4
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Set 5
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Set 6
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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 -
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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 | Transformation is a cyclic process in which used plactic is |
A. Remelted and styrene is added
B. Converted into low quality substance
C. Converted back into original components
D. None of these
|
| 2 | The scope of environmental chemistry is to study: |
A. Source of chemicals
B. Transportation of chemicals
C. Transportation of toxic chemical
D. All of these
|
| 3 | The bonding occurs among polar covalent molecules containing H and one of the small electronegative element such as O,F or N is called: |
A. Ionic bonding
B. Metallic bonding
C. Bridge bonding
D. H-bonding
|
| 4 | What is the morality of a solution containing 15g of urea is 500cm3 of solution? |
A. 1M
B. 0.5M
C. 2M
D. 1.5M
|
| 5 |
The pH range of acid rain is?
|
A. 7-6.5
B. 6.5-6
C. 6-5.6
D. Less than 5
|
| 6 | 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
|
| 7 | Men residence time of methane in atmosphere in years is: |
A. 1-7
B. 2-7
C. 3-7
D. 4-7
|
| 8 | The force which hold the atoms together to form a compound is called: |
A. Dispersion forces
B. London forces
C. A chemical bond
D. Ven der wall's forces
|
| 9 | Lead pollution is mainly due to |
A. Metallic pollution
B. Space pollution
C. Acid rain
D. Cd pollution
|
| 10 | Ozone is a gas having boiling point |
A. Unstable
B. High
C. Low
D. Moderate
|
Test Questions