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.

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

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MCAT Chemistry Chapter 21 Important MCQ's

Sr.#	Question	Answer
1	Residence time of methane in the atmosphere is	A. 3 - 7 days B. 2 -3 days C. 3 - 7 years D. 2 - 3 years
2	Contamination of water of tanning industries is due to:	A. Cr(III) B. Cr(VI) C. Mn(III) D. Mn(VII)
3	Choose the chief air pollutant among the following which depletes ozone layer	A. Carbon monoxide B. Carbon dioxide C. Chloroflurocarbons and nitrogen oxides D. Sulphur dioxide
4	Water which his considered to be safe for human consumption is known as	A. distilled water B. contaminated water C. potable water D. rain water
5	Which is not an air pollutant	A. N₂ B. CO C. NO D. N₂O
6	Forms of waste products:	A. Heat B. Smoke C. Solid D. All of these
7	Ozone acts as:	A. Pollutant B. saver C. oxidatant D. All of these
8	Ecosystem is a smaller unity of	A. Nydosphere B. Biosphere C. Lithosphere D. Attmosphere
9	Unit of ozone is?	A. Debye B. Dobson C. Esu D. Coulumb
10	The Catalyst used in the contact tower for the manufacture of H₂SO₄ is easily poisoned by:	A. Nitrous oxide B. Nitrogen gas C. Arsenic oxide D. Carbon dioxide

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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

Water in swimming pools is purified by adding

Electropositive character increases down the groups due to:

Oceans cove ____________ percent of the surface of the earth

CFCs are mainly used in industries due to

Lead pollution is mainly due to

Surface and ground water sources are contaminated by various human activities which of the followings is not a human activity that causes contamination in fresh water

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

Water is considered pollutant when value of Do is

In Purification of potable water the coagulant used is

Primary pollutants are:

Which one of the following is not air pollutant gas

Coal contains sulphur in it:

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

NO and NO2gases in atmosphere are represented by

Fungicides are the pesticides which

Alkali metals react viotlently with halogens:

DDT is a:

Ozone is effectively removed by

The bonding occurs among polar covalent molecules containing H and one of the small electronegative element such as O,F or N is called:

Hydrocarbons, SO2, CO, NH3nitrogen oxides and compounds of fluorine are called

Prepare Complete Set Wise MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test MCQs Online With Answers

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Set 17

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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

Test Questions

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NO and NO₂gases in atmosphere are represented by

Hydrocarbons, SO₂, CO, NH₃nitrogen oxides and compounds of fluorine are called