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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
Surface and ground water sources are contaminated by various human activities. Which of the following is not a human activity that causes contamination in fresh water
Question # 2
Ozone layer is high:
Question # 3
Ozone in stratosphere extends upto km:
Question # 4
The overall effect of the photochemical smog in the after noon is built up of
Question # 5
Components of environment is (in km) around the earth:
Question # 6
Water which his considered to be safe for human consumption is known as
Question # 7
Ozone is a gas having boiling point
Question # 8
In Purification of potable water the coagulant used is
Question # 9
The rigid rocky part of earth crust called lithosphere extends upto a depth of:
Question # 10
The suspended particles in the raw water can be removed by the
Question # 11
Which gas produces air pollution?
Question # 12
Which of the following air pollutant is called quiet killer
Question # 13
The amount of oxygen in the lithosphere is about
Question # 14
BOD is the oxygen demand with in day(s):
Question # 15
NO and NO2gases in atmosphere are represented by
Question # 16
alum or aluminium sulphate used as coagulant in alkaline medium change into precipitate of radicals of alumimium.
Question # 17
Peroxyacetylnitrate (PAN) is an irritant to human beings and it affects:
Question # 18
Which not a method for solid waste management>
Question # 19
Ozone is present in layer around earth:
Question # 20
Sulphate aerosols cause severe respiratory problems particularly among
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
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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 -
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MCAT Chemistry Chapter 21 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | The toxic organic compounds and heavy metals and metalloids results in contamination of |
A. surface water
B. ground water
C. both surface and ground water
D. neither surface nor ground waters
|
| 2 | Ozone in most of the tropical regions acts as a pollutant and cause |
A. damages to eyes
B. aggravates asthma
C. chest discomfort
D. all of these
|
| 3 | How much quantity of total water is available as fresh water |
A. 3%
B. 1%
C. 10%
D. 21%
|
| 4 | Which not a method for solid waste management> |
A. Landfill
B. Incinerating
C. Recycling
D. None of these
|
| 5 | The largest item which is recycled is |
A. newspaper
B. plastic
C. aluminium
D. oil
|
| 6 | The words smog is a combination of smoke and: |
A. fog
B. foke
C. fork
D. fizzy
|
| 7 | Main cause of reducing map is: |
A. Combustion of coal
B. NO and NO2
C. Un-burnt hydrocarbons
D. All of these
|
| 8 | Diseases like dysentery, typhoid and hepatitis are caused by mixing of in water: |
A. Live stock wastes
B. Oil spilage
C. detergents
D. pesticides
|
| 9 | The branch of chemistry interlinked with biology, physics, medicines, agriculture, public health and sanitary engineering etc. is: |
A. Biochemistry
B. Physical chemistry
C. Pharmaceutical chemistry
D. Environmental chemistry
|
| 10 | Region of earth capable of supporting life is called: |
A. Atmosphere
B. Hydrosphere
C. Lithosphere
D. All of these
|
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