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

Coal contains percentage of sulphur:

A. 1-9%

B. 5-9%

C. 6-9%

D. 7-9%

The normal amount of overhead ozone is about

A. 250 Du

B. 300 DU

C. 350 DU

D. 400 DU

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

A. iodine

B. bromine

C. lead

D. carbon

Ocean contains part earth's water:

A. 95%

B. 96%

C. 97%

D. 98%

Hydrosphere covers the surface of erath:

A. 70.8%

B. 71.8%

C. 72.8%

D. 73.8%

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

A. Rain

B. Live stock waste

C. Oil leaks and spills

D. Disposal of industrial effluents

One of the environment problem is the formation of oil slicks when oil is spilled from tankers in sea water.

Which treatment is suitable to remove oil slicks

A. blow air

B. add Na₂CO₃

C. use a specially made sorbent having fluorine trapped in it

D. Use a sorbent having Al₂O₃trapped in it

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

A. It attaches to sulphur of the disulphide link

B. Hg is a heavy metal

C. Hg is liquid at room temperature

D. Hg is reactive chemically

Water in swimming pools is purified by adding

A. Sodium

B. Chlorine

C. Phosphorus

D. Potassium

Major cause of SO2 on global scale is

A. Volcanoes

B. Electric sparks

C. Combustion

D. All

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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

Oceans cove ____________ percent of the surface of the earth

The pH range of acid rain is?

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

Water is purified by:

Commonly used coagulants are ions of:

Surface and ground water sources are contaminated by various human activities. Which of the following is not human activity that causes contamination in fresh water

A single free chlorine redical can destroy ozone molecules upto:

The temperature in the incineration process has a range:

DDT is a:

What is the effect of polluted air on environment

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

Which is the following is true about galvanic cell:

The pH range of acid rain is?

Suspended matter is settled in purification of water by:

Ecosystem is a smaller unit of

Test of incomplete combustion of petrol in the presence of

NO and NO2gases in atmosphere are represented by

0.1M HCI having pH =1.0 it is about 100 time stronger than acetic acid what will be the pH of acetic acid:

CFCs are mainly used in industries due to

Transportation causes to produce CO2 in atmosphere:

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

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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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NO and NO₂gases in atmosphere are represented by

Transportation causes to produce CO₂ in atmosphere: