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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 main pollutant of leather in the waste water is due to the salt of:
Question # 2
Potable water is considered to be
Question # 3
Which of spectral lines when atoms are subjected to strong electric field is called:
Question # 4
CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destory
Question # 5
The cause of minamata disease is the pollution of
Question # 6
Which is the following is true about galvanic cell:
Question # 7
A single chloride free radical can destroy the ozone molecules
Question # 8
CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy
Question # 9
The pH rain of acid rain is
Question # 10
A single chlorine free radical can destroy how many ozone molecules
Question # 11
The pH range of acid rain is?
Question # 12
Major cause of SO2 on global scale is
| Major cause of SO2 on global scale is |
Question # 13
What is the effect of polluted air on environment
Question # 14
Biological oxygen demand (BOD) is associated with
Question # 15
In the atosphere, CO2is about
Question # 16
Ecosystem is a smaller unity of
Question # 17
Synthetic organic pesticides formulated nowadays are more then:
Question # 18
Boron, aluminium, gallium, indium and thallium belong to group lll-A of the periodic table show a decrease with increasing relative atomic mass:
Question # 19
Property due to which water acts as a universal solvent is
Question # 20
Region of earth capable of supporting life is called:
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
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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 | 99.5% mass of lithosphere is made of |
A. 03 elements
B. 8 elements
C. 11 elements
D. 15 elements
|
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| 2 | Acidification of soil can leach metal: |
A. Al
B. Hg
C. Pb
D. Ca
|
|
| 3 |
|
A. Volcanoes
B. Electric sparks
C. Combustion
D. All
|
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| 4 | How much quantity of water is in the domestic use |
A. 0.08%
B. 16%
C. 24%
D. 90%
|
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| 5 | 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
|
|
| 6 | Insoluble ferric oxide is produced in the pH range: |
A. 1 to 8
B. 6 to 9
C. 3 to 13
D. 8 to 13
|
|
| 7 | Sulphate aerosols cause severe respiratory problems particularly among |
A. Infants
B. Women
C. Young people
D. Old people
|
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| 8 | Chlorination of water is effective for |
A. Killing pathogens
B. Removing dust
C. Removing hardness
D. Increasing oxygen content
|
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| 9 | Chemistry related to the study of environment affected by the chemicals and pollutants is called: |
A. Biochemistry
B. Physically chemistry
C. Pharmaceutical chemistry
D. Environmental chemistry
|
|
| 10 | Solid waster of the city is disposed off by dumping in a landfill. Which of the following gas is produced in the landfill |
A. Oxygen
B. Chlorine
C. Hydrogen sulphide
D. Hydrogen chloride gas
|
Test Questions
Share your comments & questions here
maryam
29 Jul 2019all answers given are wrong
Alishba
15 Feb 2019The mcqs are not according to syllaybs
Alishba
15 Feb 2019The mcqs are not according to syllaybs