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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MCAT Chemistry Chapter 21 Important MCQ's

Sr.#

Question

Answer

The disposal of domestic refuse, commercial and industrial solid wastes are studied under the title

A. Solid waste management

B. Waste management

C. Solid management

D. Semisolid management

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

The amount of Si in the lithosphere is about

A. 27.72%

B. 30.35%

C. 35.30%

D. 40.21%

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

A. 2

B. 3

C. 4

D. 5

Which one of the following does not act as pollutant

A. Carbon monoxide

B. Sulphur dioxide

C. Hydrocarbons

D. Carbon dioxide

Major cause of SO2 on global scale is

A. Volcanoes

B. Electric sparks

C. Combustion

D. All

Fungicides are the pesticides which

A. Kill plants

B. Kill herbs

C. Kill insects

D. Control the growth of fungus

Why is carbon monoxide called as pollutant? The reason is that

A. It combines with oxygen

B. It combines with haemoglobin

C. It inactivates glycolysis

D. It inactivates nerves

Nitrogen percentage in atmosphere is:

A. 76%

B. 77%

C. 78%

D. 79%

A large hole in the ozone layer over antarctica region was discovered in:

A. 1960s

B. 1970s

C. 1980s

D. 1990s

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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 temperature in the incineration process has a range:

Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg Toxic.

Which of the following air pollutant is called quiet killer

What is the morality of a solution containing 15g of urea is 500cm3 of solution?

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

BOD is the oxygen demand with in day(s):

A single chlorine free radical can destory how many ozone molecules

Reason of pollution are:

Photo chemical smog contains ______ as main reactants

Ozone layer is

Ecosystem is a smaller unity of

Industrial effluents have toxic synthetic organic compounds as well as heavy metals like

It is a biodegradable pollutant

The pH range of acid rain is?

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

The normal amount of overhead ozone is

What is the effect of polluted air on environment

Lithosphere extends upto kilometer of earth crust in depth:

Soil remediation means

The 95.5% mass of Lithoshone is made of 11 elements i,e O2, Si, Al, Fe, Ca, Na, K, Mg, Ti, H2and P. Which element is present in trace amount

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

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Set 2

Set 3

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Set 6

Set 7

Set 8

Set 9

Set 10

Set 11

Set 12

Set 13

Set 14

Set 15

Set 16

Set 17

Topic Test

Top Scorers Of MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test MCQ`s Test

MCAT Chemistry Chapter 21 Important MCQ's

Test Questions

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What is the morality of a solution containing 15g of urea is 500cm³ of solution?

The 95.5% mass of Lithoshone is made of 11 elements i,e O₂, Si, Al, Fe, Ca, Na, K, Mg, Ti, H₂and P. Which element is present in trace amount