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	Which one of the following does not act as pollutant	A. Carbon monoxide B. Sulphur dioxide C. Hydrocarbons D. Carbon dioxide
2	Which is property of CO?	A. Soluble in water B. Insoluble in water C. No toxic D. Pole coloured
3	Amount of fresh water used by agriculture is	A. 2% B. 23% C. 69% D. 97%
4	Density of water becomes maximum at	A. 10°C B. 4°C C. 5°C D. 12°C
5	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	A. avoid waste production B. use no solvent C. use a catalyst D. devise a multistep procedure for synthesis of new compounds
6	The 95.5% mass of Lithoshone is made of 11 elements i,e O₂, Si, Al, Fe, Ca, Na, K, Mg, Ti, H₂and P. Which element is present in trace amount	A. iodine B. bromine C. lead D. carbon
7	Ecology is a science of environment and deals specially with	A. stratosphere B. biosphere C. lithosphere D. hydrosphere
8	Photochemical smog consists of higher concentration of:	A. Oxidants B. Ozone C. a & b D. NO₃
9	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
10	Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water	A. SO₂ B. NO₂ C. CO D. a and b only

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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

Nitrogen percentage in atmosphere is:

Commonly used coagulants are ions of:

What change in plants indicates toxic effect of SO2

The destructive distillation of coal gives three products. which of following is not the product of destructive distillation of coal?

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

COD of water can be measured by

BOD means

Which is the most toxic among the given?

Why a C - Cl bond breaks by uv light

Volcanoes produce SO2:

Reason of pollution are:

In addition to many pollutants present in ground water, a successful study was conducted to remove a highly Toxic chemical.What chemical is this

Ozone is present in layer around earth:

Chlorofluorocarbons and aerosols are inert in sphere:

The semi solid wastes in landfills is called:

Which is property of CO?

Smaller unit of biosphere is:

Leachate contains:

Addition of washing soda removes

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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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What change in plants indicates toxic effect of SO₂

Volcanoes produce SO₂: