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

A pollutant affects

A. Human affects

B. Quality of life

C. Functioning of ecosystem

D. All of these

Which of the following is not a heavy industry?

A. Iron

B. Fertilize

C. Paper

D. None

Part of fresh water consumed in industry is:

A. 1%

B. 2%

C. 69%

D. 23%

Primary pollutants are:

A. oxides of sulphur

B. oxides of carbon

C. oxides of nitrogen

D. All of these

In the atmosphere, O₂is about

A. 10%

B. 15%

C. 21%

D. 25%

The pH range of the acid rain is

A. 7 - 6.5

B. 6.5 - 6

C. 6 - 5.6

D. Less than 5

In Purification of potable water the coagulant used is

A. nickel sulpahte

B. copper sulpahte

C. barium sulphate

D. alum

SO₂makes ___________ acid rains

A. carbonic acid

B. Sulfuric

C. Nitric acid

D. All of these

The normal amount of overhead ozone is about

A. 250 Du

B. 300 DU

C. 350 DU

D. 400 DU

Many petroleum products are:

A. coloured

B. colourless

C. testy

D. poisoinous

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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

The amount of oxygen in the lithosphere is about

Ozone layer is present in

COD of water can be measured by

Natural water is

Which is the following is true about galvanic cell:

Fungicides are the pesticides which

By the mid of 1980s depletion of total overhead ozone in antarctic region is

Poisoning of CO can be reveresed by giving oxygen at pressure:

Which is unnecessary for purification of water for drinking purposes

A pollutant affects

The smog having high contents of SO2is

Which gas produces air pollution?

In incinerating the waste is burnt at

0.1M HCI having pH =1.0 it is about 100 time stronger than acetic acid what will be the pH of acetic acid:

The layer of gases around the earth are called?

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

Out of total amount of water available for human use is

The film forming components of paints are

Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as

The pH range of the acid rain is

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

Set 1

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Set 3

Set 4

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Set 6

Set 7

Set 8

Set 9

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Set 11

Set 12

Set 13

Set 14

Set 15

Set 16

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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The smog having high contents of SO₂is