MDCAT Chemistry Chapter 21 MCQ Test With Answer for (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.

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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MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test

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Question # 1

Ozone is effectively removed by

Question # 2

Ozone is most of the tropical regions acts as a pollutant and causes

Question # 3

During incineration temperature range of non-rotating chamber is

Question # 4

In incinerating the waste is burnt at

Question # 5

Amount of ozone in atmosphere is expressed in units:

Question # 6

Which is the most toxic among the given?

Question # 7

Acidification of soil can leach metal:

Question # 8

BOD means

Question # 9

White marble buildings are effected by?

Question # 10

Which is unnecessary for purification of water for drinking purposes

Question # 11

Elevated concentration of ______________ is harmful for fish as it clog the gills causing suffocation

Question # 12

The disposal of domestic refuse, commercial and industrial solid wastes are studied under the title

Question # 13

Water is considered pollutant when value of Do is

Question # 14

Ozone is usually produced in the

Question # 15

Materials suspended in water or present as colloidal form in raw water are removed by:

Question # 16

Incineration is a process in which solid waste is burned at high temperature ranging from

Question # 17

Nitrogen percentage in atmosphere is:

Question # 18

Solid waster of the city is disposed off by dumping in a landfill. Which of the following gas is produced in the landfill

Question # 19

Density of water becomes maximum at

Question # 20

It is a biodegradable pollutant

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MCAT Chemistry Chapter 21 Important MCQ's

Sr.# Question Answer
1 Lead pollution is mainly due to
A. Metallic pollution
B. Space pollution
C. Acid rain
D. Cd pollution
2 Ozone is usually produced in the
A. South polar region
B. North pole region
C. Tropical region
D. Thermosphere zone
3 Ozone is a gas having boiling point
A. Unstable
B. High
C. Low
D. Moderate
4 The ozone depletion in the stratophere is mainly due to the reaction of ozone with
A. Freons
B. CFCs
C. Both A and B
D. None
5 The gases in the atmosphere are essential for sustaining life on earth. Thus oxygen is required for breathing. What for is carbon dioxide required
A. To help plant to under go photosynthesis
B. To destroy nitrogen oxide from the atmosphere
C. To help to clean the atmosphere
D. To help in fixing of bacteria
6 Agriculture consumes part of fresh water:
A. 1%
B. 2%
C. 69%
D. 23%
7 It is a biodegradable pollutant
A. Salts of HG
B. DDt
C. Aluminum foil
D. Domestic fuel
8 Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water
A. low value
B. higher value
C. both values
D. none of these
9 Water is purified by the process:
A. Aeration
B. Coagulation
C. Chlorination
D. All of these
10 alum or aluminium sulphate used as coagulant in alkaline medium change into precipitate of radicals of alumimium.
A. sulphates
B. oxides
C. hydroxides
D. chlorides

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