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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tahreem fatima 12 - Nov - 2022 00 Min 04 Sec 15/20
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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	Hardness which can be removed by boiling is called	A. Permanent hardness B. Temporary hardness C. Stiffness D. Toughness
2	The pH of the rain water in areas where acid rain is the cause of pollution may be	A. 6.5 B. 5.6 C. 4.5 D. 2.2
3	Which is the most toxic among the given?	A. heavy metals B. non-metals C. Metals D. Metalloids
4	Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg Toxic.	A. It attaches to sulphur of the disulphide link B. Hg is a heavy metal C. Hg is liquid at room temperature D. Hg is non reactive chemically
5	The semi solid wastes in landfills is called:	A. Landfill B. effluents C. Leachate D. Incineration
6	Water in swimming pools is purified by adding	A. Sodium B. Chlorine C. Phosphorus D. Potassium
7	The gases in the atmosphere are essential for sustaining life on earth. Thus oxygen is required for breathing. What for is carbon dioxide required	A. To help plant to under go photosynthesis B. To destroy nitrogen oxide from the atmosphere C. To help to clean the atmosphere D. To help in fixing of bacteria
8	Alkali metals react viotlently with halogens:	A. Halides B. Anhydrides C. Hydrides D. None of the above
9	Ozone is most of the tropical regions acts as a pollutant and causes	A. Damages to eyes B. Aggravates asthma C. Chest discomfort D. All of these
10	HOCl is a compound:	A. Polor inorganic B. organic C. Ionic D. covalant

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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

Cyclone collector is used to reduce

Coal contains percentage of sulphur:

A single chloride free radical can destroy the ozone molecules

What is the cause of water pollution

Coagulation in the purification of water is carried out by

Ozone in most of the tropical regions acts as a pollutant and cause

Lead pollution is mainly due to

The pH range of acid rain is?

Ozone is effectively removed by

Transportation causes to produce CO2 in atmosphere:

Water bodies are included in:

Commonly used coagulants are ions of:

99.5% mass of lithosphere is made of

Ozone is present in layer around earth:

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

The ozone depletion in the stratophere is mainly due to the reaction of ozone with

Which is unnecessary for purification of water for drinking purposes

Petroleum or crude oil is a complex mixture of compounds mainly:

The normal amount of overhead ozone is about in DU:

In Purification of potable water the coagulant used 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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Transportation causes to produce CO₂ in atmosphere: