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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
How much pesticides have been synthesized at present?
Question # 2
Primary pollutants are:
Question # 3
Why a C - Cl bond breaks by uv light
Question # 4
Ozone layer is present in
Question # 5
Which is property of CO?
Question # 6
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 # 7
A single chlorine free radical can destroy how many ozone molecules
Question # 8
Reason of pollution are:
Question # 9
a hole used to dump the municipal wastes is called:
Question # 10
Polycyclic aromatic hydrocarbons are taught to be
Question # 11
Solid waster of the city is disposed off by dumping in a landfill. Which of the following gas is produced in the landfill
Question # 12
Biological oxygen demand (BOD) is associated with
Question # 13
Ecosystem is a smaller unit of
Question # 14
Which one of the following does not act as pollutant
Question # 15
The pH range of acid rain is?
Question # 16
Which of the following is not a heavy industry?
| Which of the following is not a heavy industry? |
Question # 17
The words smog is a combination of smoke and:
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
What is component of environment?
Question # 20
Water in swimming pools is purified by adding
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
3 Questions
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MCAT Chemistry Chapter 21 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | Photochemical smog consists of higher concentration of: |
A. Oxidants
B. Ozone
C. a & b
D. NO3
|
| 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 | Detergents are surfactants and they reduce the |
A. B.P. of water
B. Surface tension of water
C. Wetting ability of water
D. None of these
|
| 4 | Which one of the pollutants of automobile exhausts affects the nervous system or produces mental diseases |
A. NO2
B. SO2
C. Hg
D. Pb
|
| 5 | In Purification of potable water the coagulant used is |
A. nickel sulpahte
B. copper sulpahte
C. barium sulphate
D. alum
|
| 6 | Property due to which water acts as a universal solvent is |
A. Polarity
B. It's ability to make hydrogen bond
C. Both A and B
D. Strong dipole dipole interaction
|
| 7 | Acidification of soil can leach metal: |
A. Al
B. Hg
C. Pb
D. Ca
|
| 8 | How can heavy metal contamination like the presence of Hg or Pb may be removed from the soil |
A. by using water spray
B. by blowing air
C. by treating with EDTA and then flushing the heavy metal complex out of the soil
D. by adding CaO
|
| 9 | The film forming components of paints are |
A. resins
B. thinners
C. pigments
D. driers
|
| 10 | Which gas produces air pollution? |
A. oxides of sulphur
B. oxides of carbon
C. all of these
|
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