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

Heat balance of earth is maintained by

A. Atmosphere

B. Hydrosphere

C. Lithosphere

D. Stratosphere

Part of fresh water consumed in industry is:

A. 1%

B. 2%

C. 69%

D. 23%

CFCs are mainly used in industries due to

A. Low cost

B. Gaseous nature

C. High reactivity

D. Un stability

Ozone is present in layer around earth:

A. atmosphere

B. tropospher

C. stratosphere

D. thermosphere

Ozone gas has boiling point:

A. Low

B. High

C. Medium

D. Highest

Which is not a component of environment?

A. Biosphere

B. Lithosphere

C. Hydrosphere

D. None of these

Ecology is a science of environment and deals specially with

A. stratosphere

B. biosphere

C. lithosphere

D. hydrosphere

The pH range of acid rain is?

A. 7-6.5

B. 6.5-6

C. 6-5.6

D. Less than 5

Three elements needed for the healthy growth of plants are

A. N P K

B. N K C

C. N S P

D. N Ca P

Half of the mass of atmosphere is concentrated above earth at the hieght of

A. 40 Km

B. 25-28 Km

C. 5-6 Km

D. 100 Km

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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

Materials suspended in water or present as colloidal form in raw water are removed by:

Coagulation in the purification of water is carried out by

Newspapers can be recycled again and again by how many times

The layer of gases around the earth are called?

Three elements needed for the healthy growth of plants are

Chemistry related to the study of environment affected by the chemicals and pollutants is called:

The scope of environmental chemistry is to study:

Which is not a component of environment?

Fresh water of total earth water is:

During incineration temperature range of non-rotating chamber is

Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water

Augus smith discovered in the mid of seventeenth century:

SO2makes ___________ acid rains

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

Coal contains percentage of sulphur:

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

The pH range of the acid rain is

The normal amount of overhead ozone is

White marble buildings are effected by?

Requirement of macronutrient per acre of the land is

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

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Set 10

Set 11

Set 12

Set 13

Set 14

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

Test Questions

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SO₂makes ___________ acid rains