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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tahreem fatima 12 - Nov - 2022 00 Min 04 Sec 15/20
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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	Which is not an air pollutant	A. N₂ B. CO C. NO D. N₂O
2	Most harmful of biosphere is	A. Deforestation B. Nuclear fail out C. Salinity D. Water logging
3	Biochemical oxygen demand (BOD) is the capacity of organic matter in natural water to consume oxygen with in a period of	A. 2 day B. 6 day C. 5 day D. 7 day
4	Density of water becomes maximum at	A. 10°C B. 4°C C. 5°C D. 12°C
5	By the mid of 1980s depletion of total overhead ozone in antarctic region is	A. 20% B. 30% C. 40% D. 50%
6	Which not a method for solid waste management>	A. Landfill B. Incinerating C. Recycling D. None of these
7	Transportation causes to produce CO₂ in atmosphere:	A. 72% B. 73% C. 74% D. 75%
8	For incineration temperature range is (in ^oC)	A. 700-800 B. 800-900 C. 900-1000 D. 1000-1100
9	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
10	Carbon Monoxide is:	A. colouriess B. orderless C. high toxic D. All of these

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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

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

Oceans cove ____________ percent of the surface of the earth

Components of environment is (in km) around the earth:

In incinerating the waste is burnt at

Choose the correct statements

Amount of ozone in atmosphere is expressed in units:

Newspaper can be recycled again and again by how many times?

Air pollution causes

Why a C - Cl bond breaks by uv light

Coal contains percentage of sulphur:

Pathogens in raw water are killed in step:

Addition of washing soda removes

Leachate contains:

Newspapers can be recycled again and again by how many times

How much quantity of water is in the domestic use

The temperature of in the incineration of industrial and hazardous waste process has range

Which is unnecessary for purification of water for drinking purposes

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

To purify water which has mud dissolved in it, a substance which coagulates the suspended particles is used.The coagulant may be

Chemical like Al2(SO4) or alum are used in purification of water druing step:

Prepare Complete Set Wise MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test MCQs Online With Answers

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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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To purify water which has mud dissolved in it, a substance which coagulates the suspended particles is used.
The coagulant may be

Chemical like Al₂(SO₄) or alum are used in purification of water druing step: