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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Laiba Khan 24 - Jul - 2022 02 Min 18 Sec 16/20
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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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Ali Ahmed Tauqeer 03 - Mar - 2024 03 Min 27 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	Region of earth capable of supporting life is called:	A. Atmosphere B. Hydrosphere C. Lithosphere D. All of these
2	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	A. CCl₄ B. CHCl₃ C. CH₃- CH₂- CH₂- CH₃ D. CHCl₂- CHF₂
3	BOD is the oxygen demand with in day(s):	A. Four B. Two C. Three D. Five
4	Half of the mass of atmosphere is concentrated above earth at the hieght of	A. 40 Km B. 25-28 Km C. 5-6 Km D. 100 Km
5	How much pesticides have been synthesized at present?	A. Four thousand B. Six thousand C. Eight thousand D. Ten thousand
6	Property due to which water acts as a universal solvent is	A. Polarity B. It's ability to make hydrogen bond C. Both A and B D. Strong dipole dipole interaction
7	Biochemical oxygen demand is the capacity of organic matter in natural water to consume oxygen	A. 2 days B. 5 days C. 6 days D. 7 days
8	Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water	A. low value B. higher value C. both values D. none of these
9	Which of the following human activities are contaminating surface and ground waters?	A. pesticides B. septic ranks C. petroleum and natural gas production D. all of these
10	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

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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

Water which his considered to be safe for human consumption is known as

Forms of waste products:

Photochemical smog consists of higher concentration of:

Chemicals used to kill insects are:

The temperature in the incineration of industrial and hazardons waster process had a range

Biological oxygen demand (BOD) is associated with

A single chloride free radical can destroy the ozone molecules

Hydrosphere includes

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

Diseases like dysentery, typhoid and hepatitis are caused by mixing of in water:

How much quantity of water is in the domestic use

What is component of environment?

Sulphate aerosols cause severe respiratory problems particularly among

Incineration is a process in which solid waste is burned at high temperature ranging from

Which of the following is not the required condition for the formation of smog

COD of water can be measured by

Leaching of nutrients is due to

Coal contains sulphur in it:

Water in swimming pools is purified by adding

Major cause of SO2 on global scale is

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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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