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

Exhaust fumes of cars contain which poisonous gas

A. CH₄

B. C₂H₆

C. CO

D. All of these

NO and NO₂gases in atmosphere are represented by

A. NO

B. NO₄

C. NO_x

D. N_xO_y

Out of total amount of water available for human use is

A. 0.30%

B. 0.2%

C. 40%

D. 50%

Which one of the following is not a component of environment

A. Biosphere

B. Stratosphere

C. Hydrosphere

D. Lithosphere

Density of water becomes maximum at

A. 10°C

B. 4°C

C. 5°C

D. 12°C

Which of the following is not a heavy industry?

A. Iron

B. Fertilize

C. Paper

D. None

An excellent source of energy without causing pollution is

A. Fossil fuel

B. Sun

C. Petroleum

D. Nuclear reactor

Water is purified by the process:

A. Aeration

B. Coagulation

C. Chlorination

D. All of these

Reason of pollution are:

A. Population and urbanization

B. Transportation

C. Industrialization

D. All of these

The percentage of SO₂ produced by volcanoes is:

A. 47%

B. 57%

C. 67%

D. 77%

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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

Chemicals used to kill fungi are:

Chromium (VI) is highly toxic and can cause

In incinerating the waste is burnt at

Which is unnecessary for purification of water for drinking purposes

One of the environmental problem is the formation of oil slicks when oil is spilled form tankers in sea water. Which treatment is suitable to remove oil slicks

It is a biodegradable pollutant

Contamination of water of tanning industries is due to:

Photo chemical smog contains ______ as main reactants

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

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

In the atmosphere, O2is about

Water is purified by the process:

Part of fresh water consumed in domestic purpose:

Factors affecting quality of water:

Potable water is considered to be

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

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

Which step is unnecessary for purification of water for drinking purposes

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

The bonding occurs among polar covalent molecules containing H and one of the small electronegative element such as O,F or N is called:

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

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Set 11

Set 12

Set 13

Set 14

Set 15

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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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In the atmosphere, O₂is about