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

COD of water can be measured by

Question # 2

The semi solid wastes in landfills is called:

Question # 3

Which of following is primary pollutants

Question # 4

Three elements needed for the healthy growth of plants are

Question # 5

Main cause of reducing map is:

Question # 6

The rigid rocky part of earth crust called lithosphere extends upto a depth of:

Question # 7

What is component of environment?

Question # 8

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

Question # 9

Dissolved impurities of potable water can be separated by the process of

Question # 10

Lead pollution is mainly due to

Question # 11

Which one of the following is used as coagulant for purification potable water

Question # 12

Pan is an irritant to human beings and it affects

Question # 13

Proxy acetyl nitrate (PAN) is an irritant to human beings and it affect

Question # 14

Water bodies are included in:

Question # 15

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

Question # 16

Density of water becomes maximum at

Question # 17

Which one of the following is not air pollutant gas

Question # 18

Detergent greatly effects the

Question # 19

Major cause of SO2 on global scale is

Question # 20

Fungicides are the pesticides which:

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MCAT Chemistry Chapter 21 Important MCQ's

Sr.# Question Answer
1 Increased awareness of environmental issues has led chemists to develop products and processes that do not impact on the environment in terms of pollution or depletion of sources. To help chemist to achieve this aim, some principles are drawn. Which one is not the guiding principle
A. Avoid waste production
B. Use no solvent
C. Use a catalyst
D. Devise a multistep procedure for synthesis of new compounds
2 Newspaper can be recycled again and again by how many times?
A. 2
B. 3
C. 4
D. 5
3
Three elements needed for the healthy growth of plants are
A. N P K
B. N K C
C. N S P
D. N Ca P
4 White marble buildings are effected by?
A. O2
B. SO2
C. CI2
D. CFCs
5 The smog having high contents of SO2is
A. Neutral smog
B. Reducing smog
C. Oxidizing smog
D. Artificial smog
6
Which of the following is not a heavy industry?
A. Iron
B. Fertilize
C. Paper
D. None
7 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
8 Which is unnecessary for purification of water for drinking purposes
A. Coagulation
B. Aeration
C. Treatment with Iodine
D. Treatment with chlorine
9 The pH rain of acid rain is
A. 8 - 7
B. 7 - 6.5
C. 6.5 - 6
D. less than 5
10 Leachate contains:
A. fatty acids
B. Bacteria
C. Heavy metals
D. All of these

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