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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MCAT Chemistry Chapter 21 Important MCQ's

Sr.#	Question	Answer
1	Hydrocarbons, SO₂, CO, NH₃nitrogen oxides and compounds of fluorine are called	A. Primary pollutant B. Secondary pollutant C. Tertiary pollutant D. None of these
2	The normal amount of overhead ozone is	A. 350 DU B. 450 DU C. 400 DU D. 300 DU
3	Chemicals used to kill herbs are:	A. Herbicides B. Insecticides C. Pesticides D. Fungicides
4	Water exist in only	A. One state B. Two state C. Three states D. 4 states
5	Men residence time of methane in atmosphere in years is:	A. 1-7 B. 2-7 C. 3-7 D. 4-7
6	Choose the correct statements	A. SO₂affects the nucleus B. SO₂affects plasmodesmata C. SO₂affects cell wall D. SO₂affects all membrane systems
7	CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destory	A. 50,000 B. 10,000 C. 20,000 D. None of these
8	Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg Toxic.	A. It attaches to sulphur of the disulphide link B. Hg is a heavy metal C. Hg is liquid at room temperature D. Hg is non reactive chemically
9	Pathogens in raw water are killed in step:	A. aeration B. coagulation C. chlorination D. treatment
10	The destructive distillation of coal gives three products. which of following is not the product of destructive distillation of coal?	A. Coal tar B. CO₂ C. Coal gas D. Coke

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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

In purification of potable water the coagulant used is:

DDT is a:

Hydrosphere covers the surface of erath:

Alkali metals react viotlently with halogens:

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

Which is not considered as pollutant

How can heavy metal contamination like the presence of Hg or Pb may be removed from the soil

The temperature in the incineration of industrial and hazardons waster process had a range

Which of spectral lines when atoms are subjected to strong electric field is called:

CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destory

The toxic organic compounds and heavy metals and metalloids results in contamination of

Temporary hardness can be removed by adding

In big/metropolitan cities, atmosphere is mostly polluted due to

Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic

Water is purified by:

BOD is the oxygen demand with in day(s):

Surface and ground water sources are contaminated by various human activities. Which of the following is not human activity that causes contamination in fresh water

Primary pollutants are:

Coagulation removes suspended particles in ran water:

Amount of ozone in atmosphere is expressed in units:

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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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