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.

Top Scorers Of MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test MCQ`s Test

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Munaza 11 - Oct - 2022 00 Min 07 Sec 20/20
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Sania Abbas 25 - Jul - 2022 06 Min 13 Sec 16/20
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tahreem fatima 12 - Nov - 2022 00 Min 04 Sec 15/20
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Filza Ahsan 11 - Nov - 2022 01 Min 33 Sec 15/20
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Faiz Barvi443 19 - Mar - 2023 03 Min 29 Sec 14/20
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Basit Khan 09 - Aug - 2022 06 Min 44 Sec 14/20
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Amat Nur 27 - Jun - 2023 07 Min 07 Sec 14/20
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Abdullah 11 - Apr - 2023 10 Min 50 Sec 14/20
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Dania 01 - Jan - 2023 14 Min 03 Sec 14/20
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Ali Ahmed Tauqeer 03 - Mar - 2024 03 Min 27 Sec 13/20
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Urooj Wajid 15 - Sep - 2022 06 Min 47 Sec 13/20
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Meer Sadeed 07 - Sep - 2023 10 Min 50 Sec 13/20
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Rana Ubaid Chohan 16 - Jul - 2022 10 Min 50 Sec 13/20

MCAT Chemistry Chapter 21 Important MCQ's

Sr.#	Question	Answer
1	Which is unnecessary for purification of water for drinking purposes	A. Coagulation B. Aeration C. Treatment with Iodine D. Treatment with chlorine
2	The words smog is a combination of smoke and:	A. fog B. foke C. fork D. fizzy
3	The Catalyst used in the contact tower for the manufacture of H₂SO₄ is easily poisoned by:	A. Nitrous oxide B. Nitrogen gas C. Arsenic oxide D. Carbon dioxide
4	Lead pollution is mainly due to	A. Metallic pollution B. Space pollution C. Acid rain D. Cd pollution
5	The main pollutant of leather in the waste water is due to the salt of:	A. Lead B. Chromium (VI) C. Copper D. Chromium (III)
6	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
7	The region of earth capable of supporting life is	A. Hydrosphere B. Lithosphere C. Biosphere D. Atmosphere
8	Which of the following waste material is not recycled for use again	A. Glasses B. Paper C. Plastic toys D. Hides of animals
9	Hardness which can be removed by boiling is called	A. Permanent hardness B. Temporary hardness C. Stiffness D. Toughness
10	Choose the chief air pollutant among the following which depletes ozone layer	A. Carbon monoxide B. Carbon dioxide C. Chloroflurocarbons and nitrogen oxides D. Sulphur dioxide

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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 toxic organic compounds and heavy metals and metalloids results in contamination of

Increased awareness of environment issues has led chemist 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

Commonly used coagulants are ions of:

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

In big/metropolitan cities, atmosphere is mostly polluted due to

The yellow color present in the photo chemical smog is due to presence of the

The normal amount of overhead ozone is

Leachate contains:

Water is essential for life on

Nitrogen percentage in atmosphere is:

In incinerating the waste is burnt at

The gases in the atmosphere are essential for sustaining life on earth. Thus oxygen is required for breathing. What for is carbon dioxide required

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

Ozone in most of the tropical regions acts as a pollutant and cause

Alkali metals react viotlently with halogens:

Surface and ground water sources are contaminated by various human activities. Which of the following is not human activity that causes contamination in fresh water

Part of fresh water consumed in industry is:

Which is not considered as pollutant

Newspaper can be recycled again and again by how many times?

Why is carbon monoxide called as pollutant? The reason is that

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

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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

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