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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 smog having high contents of SO2is
Question # 2
The temperature of in the incineration of industrial and hazardous waste process has range
Question # 3
How can heavy metal contamination like the presence of Hg or Pb may be removed from the soil
Question # 4
Transportation causes to produce CO2 in atmosphere:
Question # 5
Ozone layer is present in
Question # 6
Poisoning of CO can be reveresed by giving oxygen at pressure:
Question # 7
Test of incomplete combustion of petrol in the presence of
Question # 8
The range of UV-B is:
Question # 9
The bonding occurs among polar covalent molecules containing H and one of the small electronegative element such as O,F or N is called:
Question # 10
To purify water which has mud dissolved in it, a substance which coagulates the suspended particles is used.
To purify water which has mud dissolved in it, a substance which coagulates the suspended particles is used.The coagulant may be
Question # 11
Temporary hardness can be removed by adding
Question # 12
Which of the following human activities are contaminating surface and ground waters?
Question # 13
Phenomenon of acid rains gain importance in:
Question # 14
BOD is the oxygen demand with in day(s):
Question # 15
Ph of unpolluted rain water is
Question # 16
Region of earth capable of supporting life is called:
Question # 17
Water is essential for life on
Question # 18
Reason of pollution are:
Question # 19
Which is unnecessary for purification of water for drinking purposes
Question # 20
The semi solid wastes in landfills 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
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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 -
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 -
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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 | How many times a newspaper can be recycled |
A. 02
B. 05
C. 08
D. 10
|
| 2 | Organic pollutants in water are measured by |
A. DO
B. COD
C. Water logging
D. PH
|
| 3 | Temporary hardness can be removed by adding |
A. Lime
B. Carbon
C. Oxygen
D. Slaked lime
|
| 4 | In purification of potable water the coagulant used is: |
A. Nickel sulphate
B. Copper sulphate
C. Barium sulphate
D. Aluminium sulphate
|
| 5 | The rigid rocky part of earth crust called lithosphere extends upto a depth of: |
A. 10 km
B. 100 km
C. 1000 km
D. 1500 km
|
| 6 | Ozone is a gas having boiling point |
A. Unstable
B. High
C. Low
D. Moderate
|
| 7 | BOD means |
A. Boron oxygen deuterium
B. Biochemical oxygen demand
C. Biochemical oxygen dissolved
D. Biochemical oxygen death
|
| 8 | Water which his considered to be safe for human consumption is known as |
A. distilled water
B. contaminated water
C. potable water
D. rain water
|
| 9 | A single free chlorine redical can destroy ozone molecules upto: |
A. 100000
B. 100
C. 1000
D. 10000
|
| 10 | Global warming is mainly caused by ______ radiations |
A. UV
B. I.R
C. gama
D. X-rays
|
Test Questions