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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Sania Abbas 25 - Jul - 2022 06 Min 13 Sec 16/20
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Ali Ahmed Tauqeer 03 - Mar - 2024 03 Min 27 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	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
2	Chose a point which is not included in the components of environment	A. Stratosphere B. Hydrosphere C. Lithosphere D. Biosphere
3	Ratio of hydrogen (H) and oxygen (O) in water molecule by volume is	A. 2: 1 B. 1: 2 C. 3: 1 D. 4: 1
4	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
5	Which is not an air pollutant	A. N₂ B. CO C. NO D. N₂O
6	Which gas is not a constituent of atmosphere?	A. Xe B. O₃ C. H₂ D. F₂
7	Newspaper can be recycled again and again by how many times?	A. 2 B. 3 C. 4 D. 5
8	Industrial effluents have toxic synthetic organic compounds as well as heavy metals like	A. Pb B. Cr C. Hg D. All of these
9	Part of fresh water consumed in industry is:	A. 1% B. 2% C. 69% D. 23%
10	What is the morality of a solution containing 15g of urea is 500cm³ of solution?	A. 1M B. 0.5M C. 2M D. 1.5M

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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

Potable water is considered to be

Residence time of methane in the atmosphere is

Ozone is effectively removed by

Water is considered pollutant when value of Do is

COD of water can be measured by

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

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

Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will not cause water pollution

The amount of Si in the lithosphere is about

Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as

Which factor is helping to reduce the environmental pollution

Which one is more toxic?

Term ozone hole is used for depletion of ozone during months of:

Depletion of ozone is more during the month:

Water bodies are included in:

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

Polycyclic aromatic hydrocarbons are taught to be

Electropositive character increases down the groups due to:

The eleventh concentration of metal cause clogs of gills in fish:

Peroxyacetylnitrate (PAN) is an irritant to human beings and it affects:

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

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Set 12

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Set 15

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Set 17

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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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