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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Anaya 07 - Jul - 2023 04 Min 28 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	Eleven elements made part of earth mass:	A. 97.5% B. 98.5% C. 99.5% D. 100%
2	Nitrogen percentage in atmosphere is:	A. 76% B. 77% C. 78% D. 79%
3	Which one of the pollutants of automobile exhausts affects the nervous system or produces mental diseases	A. NO₂ B. SO₂ C. Hg D. Pb
4	The temperature in the incineration of industrial and hazardons waster process had a range	A. 950 to 1300°C B. 500 to 900°C C. 250 to 500°C D. 900 to 1000°C
5	The pH range of the acid rain is	A. 7 - 6.5 B. 6.5 - 6 C. 6 - 5.6 D. Less than 5
6	Oceans cove ____________ percent of the surface of the earth	A. 60 B. 70 C. 80 D. 97
7	Requirement of macronutrient per acre of the land is	A. 5 to 200 kg B. 20-200 kg C. 200-400 kg D. 30-400 kg
8	Which is the most toxic among the given?	A. heavy metals B. non-metals C. Metals D. Metalloids
9	Chemical equilibrium involving reactants and products in more than one phase is called:	A. Homogeneous B. Heterogeneous C. Dynamic D. Static
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 smog having high contents of SO2is

Hard water can block radiators due to formation of

Men residence time of methane in atmosphere in years is:

Hydrocarbons, SO2, CO, NH3nitrogen oxides and compounds of fluorine are called

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

White marble buildings are effected by?

Exposure to CO results in

Lithosphere extends upto kilometer of earth crust in depth:

The % of CO2in the atmosphere is

Water is purified by the process:

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

Forms of waste products:

Water is purified by:

Ecosystem is a smaller unit of

CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy

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

Coal contains sulphur in it:

Ratio of hydrogen (H) and oxygen (O) in water molecule by volume is

NO and NO2gases in atmosphere are represented by

Biological oxygen demand (BOD) is associated with

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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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The smog having high contents of SO₂is

Hydrocarbons, SO₂, CO, NH₃nitrogen oxides and compounds of fluorine are called

The % of CO₂in the atmosphere is

NO and NO₂gases in atmosphere are represented by