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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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	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	A. Blow air B. Add Na₂CO₃ C. Use a specially made sorbent having fluorine trapped in it D. Use a sorbent having Al₂O₃trapped in it
2	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
3	The toxic organic compounds and heavy metals and metalloids results in contamination of	A. surface water B. ground water C. both surface and ground water D. neither surface nor ground waters
4	Amount of ozone in atmosphere is expressed in units:	A. Kilograms B. cm C. molarity D. DU
5	Which of the following waste material is not recycled for use again	A. Glasses B. Paper C. Plastic toys D. Hides of animals
6	Water is considered pollutant when value of Do is	A. 6 PPM B. 8 PPM C. 03 PPM D. 10 PPM
7	Hydrosphere includes	A. Seas and rivers B. Ocean & polar ice caps C. Ground water D. All of above
8	A single chloride free radical can destroy the ozone molecules	A. 100 B. 100000 C. 10000 D. 10
9	The reason of acid rains is	A. Release of CO in excess by in complete combustion B. Excess release of NO₂and SO₂from buring of fossil fules C. Formation of excess CO₂due to combustion and respiration D. Formation of NH₃in excess from industry and coal gas
10	The temperature of in the incineration of industrial and hazardous waste process has range	A. 900 - 1000°C B. 250 - 500°C C. 950 - 1300°C D. 500 - 900°C

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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

Out of total amount of water available for human use is

Photochemical smog consists of higher concentration of:

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

A single chloride free redical can destroy bow many ozene molecules?

Which one is more toxic?

Sulphate aerosols cause severe respiratory problems particularly among

Photo chemical smog contains ______ as main reactants

Which factor is helping to reduce the environment pollution

BOD means

How much quantity of total water is available as fresh water

Men residence time of methane in atmosphere in years is:

The pH range of the acid rain is

Three elements needed for the healthy growth of plants are

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

Which factor is helping to reduce the environmental pollution

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

Chemical equilibrium involving reactants and products in more than one phase is called:

CFC's are known to cause depletion of ozone layer therefore their use has been banned in refrigerators and air conditioners. Which alternate compound may be suitable to replace CFC

0.1M HCI having pH =1.0 it is about 100 time stronger than acetic acid what will be the pH of acetic acid:

SO2 produced by volcanoes is about

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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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SO₂produced by volcanoes is about