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

In incinerating the waste is burnt at

Question # 2

Which one of the following is not a component of environment

Question # 3

99.5% mass of lithosphere is made of

Question # 4

Natural water is

Question # 5

The film forming components of paints are

Question # 6

The ozone depletion in the stratophere is mainly due to the reaction of ozone with

Question # 7

Which is not the affect of polluted air on environment

Question # 8

Leachate contains:

Question # 9

The suspended particles in the raw water can be removed by the

Question # 10

Coagulation in the purification of water is carried out by

Question # 11

Leather tanneries use big auantities of:

Question # 12

Site of land for landfill is selected based upon.

Question # 13

Ocean contains part earth's water:

Question # 14

Choose the correct statements

Question # 15

The largest item which is recycled is

Question # 16

Pathogens in raw water are killed in step:

Question # 17

Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will not cause water pollution

Question # 18

The % of CO2in the atmosphere is

Question # 19

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

Question # 20

Which of the following is not a heavy industry?

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MCAT Chemistry Chapter 21 Important MCQ's

Sr.# Question Answer
1 Ozone is a gas having boiling point
A. Unstable
B. High
C. Low
D. Moderate
2 Which is not an air pollutant
A. N2
B. CO
C. NO
D. N2O
3 Proxy acetyl nitrate (PAN) is an irritant to human beings and it affect
A. Nose
B. Stomach
C. Eyes
D. Ears
4 What change in plants indicates toxic effect of SO2
A. Weathering of leaves
B. Darkening of leaves
C. Falling of leaves
D. Bleaching of leaves
5 The percentage of SO2 produced by volcanoes is:
A. 47%
B. 57%
C. 67%
D. 77%
6 Heat balance of earth is maintained by sphere:
A. Hydrosphere
B. atmosphers
C. lithosphere
D. biosphere
7 Reason of pollution are:
A. Population and urbanization
B. Transportation
C. Industrialization
D. All of these
8 The pH range of the acid rain is
A. 6.5 - 6
B. Less than 5
C. 8 - 7.5
D. 7 - 6.5
9 Leaching of nutrients is due to
A. Drying of soil
B. Combustion of soil
C. Acidification of soil
D. Neutralization of soil
10 DDT is a:
A. Fungicide
B. Insecticide
C. Herbicide
D. All

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