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

Electropositive character increases down the groups due to:

A. Increase in atomic size of the elements

B. Decrease in ionization potential

C. Decreases in electromagnetically of the element

D. All the above

How much pesticides have been synthesized at present?

A. Four thousand

B. Six thousand

C. Eight thousand

D. Ten thousand

Photo chemical smog contains ______ as main reactants

A. Nitrons oxide and unburnt hydrocarbons

B. Nilric oxide and unburnt hydrocarbons

C. No and burnt hydrocarbons

D. N₂O and burnt hydrocarbons

The destructive distillation of coal gives three products. which of following is not the product of destructive distillation of coal?

A. Coal tar

B. CO₂

C. Coal gas

D. Coke

The process of coagulation can remove suspended solids in raw water about

A. 50%

B. 60%

C. Less than 40%

D. More than 80%

Major cause of SO2 on global scale is

A. Volcanoes

B. Electric sparks

C. Combustion

D. All

The normal amount of overhead ozone is about in DU:

A. 150

B. 250

C. 350

D. 450

Water is made disinfectant during purification of water to the step:

A. aeration

B. coagulation

C. chlorination

D. treatment

The amount of Si in the lithosphere is about

A. 27.72%

B. 30.35%

C. 35.30%

D. 40.21%

CFCs are mainly used in industries due to

A. Low cost

B. Gaseous nature

C. High reactivity

D. Un stability

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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 toxic organic compounds and heavy metals and metalloids results in contamination of

Troposphere extends upto km:

Transformation is a cyclic process in which used plactic is

Hydrocarbons, SO2, CO, NH3nitrogen oxides and compounds of fluorine are called

Leaching of nutrients is due to

The percentage of SO2 produced by volcanoes is:

The pH range of the acid rain is

Ocean contains part earth's water:

Unit of ozone is?

Which one of the following is used as coagulant for purification potable water

Chemicals used to kill herbs are:

Which of following is primary pollutants

Increased awareness of environment issues has led chemist to develop products and processes that do not impact on the environment in terms of pollution or depletion of sources. To help chemist to achieve this aim, some principles are drawn, which one is not the guiding principle

Suspended matter is settled in purification of water by:

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

Ratio of hydrogen (H) and oxygen (O) in water molecule by volume is

Factors affecting quality of water:

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

Which of the following factors is not used to determine the quality of water

Many petroleum products are:

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

Set 1

Set 2

Set 3

Set 4

Set 5

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

Hydrocarbons, SO₂, CO, NH₃nitrogen oxides and compounds of fluorine are called

The percentage of SO₂ produced by volcanoes is:

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