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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
Atmosphere consists of gasses:
Question # 2
Which of the following waster material is not recycled for use again
Question # 3
Water is made disinfectant during purification of water to the step:
Question # 4
Chromium (VI) is highly toxic and can cause
Question # 5
Troposphere extends upto km:
Question # 6
Dissolved impurities of potable water can be separated by the process of
Question # 7
Heat balance of earth is maintained by sphere:
Question # 8
The pH range of the acid rain is
Question # 9
Proxy acetyl nitrate (PAN) is an irritant to human beings and it affect
Question # 10
Hydrocarbons, SO2, CO, NH3nitrogen oxides and compounds of fluorine are called
Question # 11
Which one of the following is an organic compound?
Question # 12
Which of the following is not a heavy industry?
| Which of the following is not a heavy industry? |
Question # 13
Chlorofluorocarbon, CF2Cl2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone
Question # 14
Ozone is produced in regions:
Question # 15
Coal contains sulphur in it:
Question # 16
Potable water is considered to be
Question # 17
The film forming components of paints are
Question # 18
Industrial effluents have toxic synthetic organic compounds as well as heavy metals like
Question # 19
Major cause of SO2 on global scale is
| Major cause of SO2 on global scale is |
Question # 20
The smog having high contents of SO2is
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 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
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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 | Which one of the following is an organic compound? |
A. Calcium carbide
B. Calcium cyanide
C. Carbon disulphide
D. None of these
|
| 2 | Why a C- C bond breaks by uv light |
A. Cl is most electronegative
B. Cl is volatile
C. C - Cl bond energy is smaller than that of C - H bond energy
D. uv light provides energy which is sufficient to break C - Cl bond and not C - H bond
|
| 3 | BOD means |
A. Boron oxygen deuterium
B. Biochemical oxygen demand
C. Biochemical oxygen dissolved
D. Biochemical oxygen death
|
| 4 | The gases in the atmosphere are essential for sustaining life on earth. Thus oxygen is required for breathing. What for is carbon dioxide required |
A. To help plant to under go photosynthesis
B. To destroy nitrogen oxide from the atmosphere
C. To help to clean the atmosphere
D. To help in fixing of bacteria
|
| 5 | Chemicals used to kill herbs are: |
A. Herbicides
B. Insecticides
C. Pesticides
D. Fungicides
|
| 6 | Leachate contains: |
A. fatty acids
B. Bacteria
C. Heavy metals
D. All of these
|
| 7 | Photochemical smog consists of higher concentration of: |
A. Oxidants
B. Ozone
C. a & b
D. NO3
|
| 8 | Ozone layer is |
A. 25 - 28 km high
B. 26 - 29 km high
C. 24 - 27 km high
D. 20 - 28 km high
|
| 9 | Addition of washing soda removes |
A. Softness of water
B. Temporary hardness of water
C. Permanent hardness of water
D. Hydrogen from water
|
| 10 | Transformation is a cyclic process in which used plactic is |
A. Remelted and styrene is added
B. Converted into low quality substance
C. Converted back into original components
D. None of these
|
Test Questions