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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
Lead pollution is mainly due to
Question # 2
Rigid rocky crust earth upto a depth of 100 km is called:
Question # 3
Which one is more toxic?
Question # 4
Which of the following waste material is not recycled for use again
Question # 5
In the atosphere, CO2is about
Question # 6
Biological oxygen demand (BOD) is associated with
Question # 7
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 # 8
The process of coagulation can remove suspended solids in raw water about
Question # 9
Transformation is a cyclic process in which used plactic is
Question # 10
Organic pollutants in water are measured by
Question # 11
Why a C - Cl bond breaks by uv light
Question # 12
Nitrogen percentage in atmosphere is:
Question # 13
A chemist says that glass must be a super cooled liquid. the reason that he might have in his mind is that glass has:
Question # 14
SO2makes ___________ acid rains
Question # 15
A single chlorine free radical can destroy how many ozone molecules
Question # 16
The temperature of in the incineration of industrial and hazardous waste process has range
Question # 17
Detergents are surfactants and they reduce the
Question # 18
The 95.5% mass of Lithoshone is made of 11 elements i,e O2, Si, Al, Fe, Ca, Na, K, Mg, Ti, H2and P. Which element is present in trace amount
Question # 19
A single free chlorine redical can destroy ozone molecules upto:
Question # 20
Boron, aluminium, gallium, indium and thallium belong to group lll-A of the periodic table show a decrease with increasing relative atomic mass:
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 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
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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 normal amount of overhead ozone is about |
A. 250 Du
B. 300 DU
C. 350 DU
D. 400 DU
|
| 2 | Ecosystem is a smaller unity of |
A. Nydosphere
B. Biosphere
C. Lithosphere
D. Attmosphere
|
| 3 | Ozone is an allotropic form of: |
A. Carbon
B. Phosphorus
C. Oxygen
D. Sulfur
|
| 4 | Oceans, rivers, streams, leaks, polar ice caps, glaciers and group water reservoirs are included in |
A. Atmosphere
B. Lithosphere
C. Hydrosphere
D. Biosphere
|
| 5 | Potable water is considered to be |
A. Safe for human consumption
B. The ground water
C. The surface water
D. Now safe for human consumption
|
| 6 | The cause of minamata disease is the pollution of |
A. Arsenic (As) into atomosphere
B. Industrial waste having Hg
C. Organic waste in drinking H2O
D. Oil spills in H2O
|
| 7 | The most important pesticides are: |
A. Herbicides
B. Insecticides
C. Fungicides
D. All
|
| 8 | Which of the following is a macronutrient? |
A. Boron
B. Iron
C. Copper
D. Carbon
|
| 9 | The eleventh concentration of metal cause clogs of gills in fish: |
A. Al
B. He
C. Pb
D. Ca
|
| 10 | Leachate contains: |
A. fatty acids
B. Bacteria
C. Heavy metals
D. All of these
|
Test Questions