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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 normal amount of overhead ozone is
Question # 2
Three elements needed for the healthy growth of plants are
| Three elements needed for the healthy growth of plants are |
Question # 3
The force which hold the atoms together to form a compound is called:
Question # 4
Fresh water of total earth water is:
Question # 5
Ecosystem is a smaller unit of
Question # 6
The destructive distillation of coal gives three products. which of following is not the product of destructive distillation of coal?
Question # 7
The yellow color present in the photo chemical smog is due to presence of the
Question # 8
Water cover earth surface more than:
Question # 9
Which of the following factors is not used to determine the quality of water
Question # 10
Electropositive character increases down the groups due to:
Question # 11
Which gas is not a constituent of atmosphere?
Question # 12
A single chloride free radical can destroy the ozone molecules
Question # 13
SO2and NO2cause pollution due to increase in
Question # 14
Ozone is usually produced in the
Question # 15
Sulphate aerosols cause severe respiratory problems particularly among
Question # 16
The ozone depletion in the stratophere is mainly due to the reaction of ozone with
Question # 17
COD of water can be measured by
Question # 18
Hard water can block radiators due to formation of
Question # 19
The percentage of SO2 produced by volcanoes is:
Question # 20
Exposure to CO results in
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 -
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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 | Which step is unnecessary for purification of water for drinking purposes |
A. aeration
B. coagulation
C. treatment with chlorine
D. treatment with iodine
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| 2 | How much quantity of water is in the domestic use |
A. 0.08%
B. 16%
C. 24%
D. 90%
|
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| 3 | Factors affecting quality of water: |
A. D.O
B. BOD
C. COD
D. a,b,c
|
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| 4 | HOCl is a compound: |
A. Polor inorganic
B. organic
C. Ionic
D. covalant
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| 5 | Chemicals used to kill fungi are: |
A. Herbicides
B. Insecticides
C. Pesticides
D. fungicides
|
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| 6 | A single chloride free radical of CFCs can destroy upto ozone molecules: |
A. 10
B. 100
C. 1000
D. 100000
|
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| 7 | The temperature in the incineration of industrial and hazardons waster process had a range |
A. 950 to 1300°C
B. 500 to 900°C
C. 250 to 500°C
D. 900 to 1000°C
|
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| 8 | How can heavy metal contamination like the presence of Hg or Pb may be removed from the soil |
A. by using water spray
B. by blowing air
C. by treating with EDTA and then flushing the heavy metal complex out of the soil
D. by adding CaO
|
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| 9 | DDT is a: |
A. Fungicide
B. Insecticide
C. Herbicide
D. All
|
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| 10 |
|
A. Ozone
B. Carbonic acid
C. Sulphuric acid
D. Carbon dioxide
|
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