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

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

A. benzene

B. minerals

C. hydrocarbons

D. phenols

Water exist in only

A. One state

B. Two state

C. Three states

D. 4 states

Part of fresh water consumed in industry is:

A. 1%

B. 2%

C. 69%

D. 23%

Diseases like dysentery, typhoid and hepatitis are caused by mixing of in water:

A. Live stock wastes

B. Oil spilage

C. detergents

D. pesticides

Ozone in stratosphere extends upto km:

A. 0-15 km

B. 10-15 km

C. 15-40 km

D. 15-25 km

Detergent greatly effects the

A. Aquatic life

B. Modern life

C. Terrestrial life

D. Plants life

The yellow color present in the photo chemical smog is due to presence of the

A. Carbon dioxide

B. Nitrogen dioxide

C. Chlorine

D. All

Heat balance of earth is maintained by

A. Atmosphere

B. Hydrosphere

C. Lithosphere

D. Stratosphere

Why a C- C bond breaks by uv light

A. Cl is most electronegative

B. Cl is volatile

C. C - Cl bond energy is smaller than that of C - H bond energy

D. uv light provides energy which is sufficient to break C - Cl bond and not C - H bond

Which of the following is not a secondary pollutant

A. Ozone

B. Carbonic acid

C. Sulphuric acid

D. Carbon dioxide

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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

In addition to many pollutants present in ground water, a successful study was conducted to remove a highly Toxic chemical.What chemical is this

The pH range of acid rain is?

Water in swimming pools is purified by adding

Lanthanides an actinides belong to following group of periodic table:

Air pollution causes

Coagulation in the purification of water is carried out by

How can heavy metal contamination like the presence of Hg or Pb may be removed from the soil

Soil remediation means

Which step is unnecessary for purification of water for drinking purposes

The pH rain of acid rain is

Out of total amount of water available for human use is

The concentration of dissolved molecular oxygen in water which acts as the most important oxidizing agent ranges from

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

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

Surface and ground water sources are contaminated by various human activities which of the followings is not a human activity that causes contamination in fresh water

Smaller unit of biosphere is:

Which is not the condition for the formation of smog

Choose the correct statements

Which of the following air pollutant is called quiet killer

HOCl is a compound:

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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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