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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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	Out of total amount of water available for human use is	A. 0.30% B. 0.2% C. 40% D. 50%
2	The branch of chemistry interlinked with biology, physics, medicines, agriculture, public health and sanitary engineering etc. is:	A. Biochemistry B. Physical chemistry C. Pharmaceutical chemistry D. Environmental chemistry
3	Residence time of methane in the atmosphere is	A. 3 - 7 days B. 2 -3 days C. 3 - 7 years D. 2 - 3 years
4	The most important pesticides are:	A. Herbicides B. Insecticides C. Fungicides D. All
5	The eleventh concentration of metal cause clogs of gills in fish:	A. Al B. He C. Pb D. Ca
6	COD of water can be measured by	A. Cr₂O₃ B. Cr₂O₄^-2ions C. Cr₂O₇^-2ions D. None of these
7	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
8	Poisoning of CO can be reveresed by giving oxygen at pressure:	A. low B. least C. medium D. High
9	A single chloride free redical can destroy bow many ozene molecules?	A. 100 B. 100000 C. 10000 D. 10
10	Elevated concentration of ______________ is harmful for fish as it clog the gills causing suffocation	A. AI B. Hg C. As D. Cr(vi)

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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

A single chloride free radical of CFCs can destroy upto ozone molecules:

The morality of the solution containing x grams ammonium sulfate in 500cm3 of the solution is 0.6 what is x?

Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water

Which step is unnecessary for purification of water for drinking purposes

Coagulation removes suspended particles in ran water:

Why a C - Cl bond breaks by uv light

Ozone is an allotropic form of:

Surface and ground water sources are contaminated by various human activities which of the followings is not a human activity that causes contamination in fresh water

Polycyclic aromatic hydrocarbons are taught to be

As the number of carbon atoms increase the number of isomers also increase. The six carbon compound hexane has as many as:

Global warming is mainly caused by ______ radiations

Elements in lithosphere exist generally as:

The layer of earth around the earth is called:

Atmosphere consists of gasses:

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

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

Which is unnecessary for purification of water for drinking purposes

Oceans, rivers, streams, leaks, polar ice caps, glaciers and group water reservoirs are included in

In purification of potable water the coagulant used is:

Chemicals used to kill fungi are:

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

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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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