MDCAT Chemistry Chapter 21 online mcq test with answers for chapter 21 (Environmental Chemistry)

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.

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Meer Sadeed 07 - Sep - 2023 10 Min 50 Sec 13/20
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Rana Ubaid Chohan 16 - Jul - 2022 10 Min 50 Sec 13/20

MCAT Chemistry Chapter 21 Important MCQ's

Sr.#	Question	Answer
1	Ozone layer is high:	A. 20-23 km B. 22-25 km C. 23-26 km D. 25-28 km
2	Fungicides are the pesticides which:	A. Control the growth of fungus B. Kills insects C. Kills plants D. Kill herb
3	White marble buildings are effected by?	A. O₂ B. SO₂ C. CI₂ D. CFC_s
4	Water is considered pollutant when value of Do is	A. 6 PPM B. 8 PPM C. 03 PPM D. 10 PPM
5	Lead pollution is mainly due to	A. Metallic pollution B. Space pollution C. Acid rain D. Cd pollution
6	One of the environmental problem is the formation of oil slicks when oil is spilled form tankers in sea water. Which treatment is suitable to remove oil slicks	A. Blow air B. Add Na₂CO₃ C. Use a specially made sorbent having fluorine trapped in it D. Use a sorbent having Al₂O₃trapped in it
7	When chlorofluoro carbon are subjected to U.V they form	A. Cations B. Aninons C. Free radicals D. None of these
8	Smaller unit of biosphere is:	A. specie B. ecosystem C. plankton D. troposphere
9	The morality of the solution containing x grams ammonium sulfate in 500cm3 of the solution is 0.6 what is x?	A. 39.6 B. 40.5 C. 42.7 D. 45.1
10	COD of water can be measured by	A. Cr₂O₃ B. Cr₂O₄^-2ions C. Cr₂O₇^-2ions D. None of these

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MDCAT Chemistry Chapter 21 MCQ Test With Answer for (Environmental Chemistry)

MCQ's Test For MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test

MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test

Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water

Nitrogen percentage in atmosphere is:

Ozone is effectively removed by

Which factor is helping to reduce the environment pollution

Chloroform is carcinogenic:

Biochemical oxygen demand (BOD) is the capacity of organic matter in natural water to consume oxygen with in a period of

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

In Purification of potable water the coagulant used is

Which not a method for solid waste management>

Chemicals used to kill fungi are:

Water is purified by:

Pathogens in raw water are killed in step:

Depletion of ozone is more during the month:

Chemical equilibrium involving reactants and products in more than one phase is called:

Chlorofluorocarbons and aerosols are inert in sphere:

Oxides of sulphur react in atmosphere by various reactions to form:

The smog having high contents of SO2is

Chemical like Al2(SO4) or alum are used in purification of water druing step:

SO2 produced by volcanoes is about

Water is considered pollutant when value of Do is

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Top Scorers Of MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test MCQ`s Test

MCAT Chemistry Chapter 21 Important MCQ's

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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

The smog having high contents of SO₂is

Chemical like Al₂(SO₄) or alum are used in purification of water druing step:

SO₂produced by volcanoes is about