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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
In big/metropolitan cities, atmosphere is mostly polluted due to
Question # 2
The ozone depletion in the stratophere is mainly due to the reaction of ozone with
Question # 3
Which of following is primary pollutants
Question # 4
In the atmosphere, O2is about
Question # 5
Ocean contains part earth's water:
Question # 6
Test of incomplete combustion of petrol in the presence of
Question # 7
NO and NO2gases in atmosphere are represented by
Question # 8
Which is used as a coagulant:
Question # 9
Industrial effluents have toxic synthetic organic compounds as well as heavy metals like
Question # 10
A single chloride free redical can destroy bow many ozene molecules?
Question # 11
Transportation causes to produce CO2 in atmosphere:
Question # 12
Depletion of ozone is more during the month:
Question # 13
Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water
Question # 14
White marble buildings are effected by?
Question # 15
The reason of acid rains is
Question # 16
Which of the following is not a heavy industry?
| Which of the following is not a heavy industry? |
Question # 17
Region of earth capable of supporting life is called:
Question # 18
Coagulation removes suspended particles in ran water:
Question # 19
The rigid rocky part of earth crust called lithosphere extends upto a depth of:
Question # 20
What change in plants indicates toxic effect of SO2
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
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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 13
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Set 14
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Set 16
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Set 17
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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 -
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T tahreem fatima 12 - Nov - 2022 00 Min 04 Sec 15/20 -
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MCAT Chemistry Chapter 21 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | The largest item which is recycled is |
A. newspaper
B. plastic
C. aluminium
D. oil
|
| 2 | During thunderstorms, water dissolves |
A. Dust particles
B. HCl
C. Nitric acid
D. Clouds
|
| 3 | Choose the correct statements |
A. SO2affects the nucleus
B. SO2affects plasmodesmata
C. SO2affects cell wall
D. SO2affects all membrane systems
|
| 4 | The eleventh concentration of metal cause clogs of gills in fish: |
A. Al
B. He
C. Pb
D. Ca
|
| 5 | Lanthanides an actinides belong to following group of periodic table: |
A. IB
B. VIIIB
C. IIB
D. IIIB
|
| 6 | Biological oxygen demand (BOD) is associated with |
A. Organic matter
B. Micro organisms
C. Both a and b
D. None
|
| 7 | Which one of the pollutants of automobile exhausts affects the nervous system or produces mental diseases |
A. NO2
B. SO2
C. Hg
D. Pb
|
| 8 | Photochemical smog consists of higher concentration of: |
A. Oxidants
B. Ozone
C. a & b
D. NO3
|
| 9 | During incineration temperature range of non-rotating chamber is |
A. 900-1000C°
B. 650-1100C°
C. 950-1300C°
D. 700-900C°
|
| 10 | Ozone gas has boiling point: |
A. Low
B. High
C. Medium
D. Highest
|
Test Questions