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	COD of water can be measured by	A. Cr₂O₃ B. Cr₂O₄^-2ions C. Cr₂O₇^-2ions D. None of these
2	Potable water is considered to be	A. Safe for human consumption B. The ground water C. The surface water D. Now safe for human consumption
3	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
4	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	A. Live stock waste B. Oil leaks and spills C. Desposal of industrial effluents D. Rain
5	Forms of waste products:	A. Heat B. Smoke C. Solid D. All of these
6	The morality of the solution containing x grams ammonium sulfate in 500cm3 of the solution is 0.6 what is x?	A. 39.6 B. 40.5 C. 42.7 D. 45.1
7	Which of spectral lines when atoms are subjected to strong electric field is called:	A. Compton effect B. Stark effect C. Zeeman effect D. Photoelectric effect
8	Which of the following is not the required condition for the formation of smog	A. Sufficient NO B. Sunlight C. Less movement of air D. Winds
9	Why a C- C bond breaks by uv light	A. Cl is most electronegative B. Cl is volatile C. C - Cl bond energy is smaller than that of C - H bond energy D. uv light provides energy which is sufficient to break C - Cl bond and not C - H bond
10	Ozone layer is present in	A. Troposphere B. Stratosphere C. Mesosphere D. Ionosphere

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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

Exhaust fumes of cars contain which poisonous gas

Many petroleum products are:

When chlorofluoro carbon are subjected to U.V they form

A single chloride free radical can destroy the ozone molecules

The range of UV-B is:

The reason of acid rains is

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

Which is used as a coagulant:

Which of the following factors is not used to determine the quality of water

A large hole in the ozone layer over antarctica region was discovered in:

The disposal of domestic refuse, commercial and industrial solid wastes are studied under the title

Which is unnecessary for purification of water for drinking purposes

Which is not a component of environment?

COD of water can be measured by

Sulphate aerosols cause severe respiratory problems particularly among

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

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

Detergents are surfactants and they reduce the

Leaching of nutrients is due to

Which of the following substance is not present in acid rain?

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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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