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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
As the number of carbon atoms increase the number of isomers also increase. The six carbon compound hexane has as many as:
Question # 2
Lithosphere has amount of silicon
Question # 3
In water the most important oxidizing agent is dissolved molecular oxygen which ranges form
Question # 4
The largest item which is recycled is
Question # 5
Chose a point which is not included in the components of environment
Question # 6
Global warming is mainly caused by ______ radiations
Question # 7
SO2makes ___________ acid rains
Question # 8
Ozone in most of the tropical regions acts as a pollutant and cause
Question # 9
What is the morality of a solution containing 15g of urea is 500cm3 of solution?
Question # 10
Which of the following is not a heavy industry?
| Which of the following is not a heavy industry? |
Question # 11
The cause of minamata disease is the pollution of
Question # 12
Which of the following waster material is not recycled for use again
Question # 13
Incineration is a process in which solid waste is burned at high temperature ranging from
Question # 14
The gases in the atmosphere are essential for sustaining life on earth. Thus oxygen is required for breathing. What for is carbon dioxide required
Question # 15
Polar ice caps can melt due to
Question # 16
The normal amount of overhead ozone is
Question # 17
A large hole in the ozone layer over antarctica region was discovered in:
Question # 18
The % of CO2in the atmosphere is
Question # 19
Atmosphere consists of gasses:
Question # 20
Density of water becomes maximum at
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 | Site of land for landfill is selected based upon. |
A. topography
B. location of ground
C. water table
D. All of these
|
| 2 | What change in plants indicates toxic effect of SO2 |
A. Weathering of leaves
B. Darkening of leaves
C. Falling of leaves
D. Bleaching of leaves
|
| 3 | Lead pollution is mainly due to |
A. Metallic pollution
B. Space pollution
C. Acid rain
D. Cd pollution
|
| 4 | Newspapers can be recycled again and again by how many times |
A. 5
B. 2
C. 4
D. 3
|
| 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 | HOCl is a compound: |
A. Polor inorganic
B. organic
C. Ionic
D. covalant
|
| 7 | Amount of fresh water used by agriculture is |
A. 2%
B. 23%
C. 69%
D. 97%
|
| 8 | Chemicals used to kill insects are: |
A. Herbicides
B. Insecticides
C. Pesticides
D. Fungicides
|
| 9 | A single chloride free redical can destroy bow many ozene molecules? |
A. 100
B. 100000
C. 10000
D. 10
|
| 10 | Leather tanneries use big auantities of: |
A. Cr Vi salts
B. Cr III salts
C. Mn-salts
D. Pb-salts
|
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