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.

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

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tahreem fatima 12 - Nov - 2022 00 Min 04 Sec 15/20
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Meer Sadeed 07 - Sep - 2023 10 Min 50 Sec 13/20
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Rana Ubaid Chohan 16 - Jul - 2022 10 Min 50 Sec 13/20

MCAT Chemistry Chapter 21 Important MCQ's

Sr.#	Question	Answer
1	The water is considered to be polluted when the concentration of oxygen in it is	A. 6 - 9ppm B. 6 ppm C. 8 ppm D. Less than 4pm
2	HOCl is a compound:	A. Polor inorganic B. organic C. Ionic D. covalant
3	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	A. live stock waste B. oil leaks and spills C. disposal of industrial effluents D. rain
4	NO and NO₂gases in atmosphere are represented by	A. NO B. NO₄ C. NO_x D. N_xO_y
5	The incineration may reduce volume of wastes upto:	A. 1/4th B. 1/2nd C. 2/3rd D. 3/4th
6	Lithosphere has amount of silicon	A. 35.30% B. 27.72% C. 40.01% D. 21.13%
7	Leaching of nutrients is due to	A. Drying of soil B. Combustion of soil C. Acidification of soil D. Neutralization of soil
8	Ozone in stratosphere extends upto km:	A. 0-15 km B. 10-15 km C. 15-40 km D. 15-25 km
9	Factors affecting quality of water:	A. D.O B. BOD C. COD D. a,b,c
10	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

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

alum or aluminium sulphate used as coagulant in alkaline medium change into precipitate of radicals of alumimium.

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

During thunderstorms, water dissolves

CFC's are known to cause depletion of ozone layer therefore their use has been banned in refrigerators and air conditioners. Which alternate compound may be suitable to replace CFC

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

Which is the following is true about galvanic cell:

The force which hold the atoms together to form a compound is called:

Unit of ozone is?

Chlorofluorocarbons and aerosols are inert in sphere:

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

The temperature of in the incineration of industrial and hazardous waste process has range

In water the most important oxidizing agent is dissolved molecular oxygen which ranges form

The cause of minamata disease is the pollution of

The temperature in the incineration of industrial and hazardons waster process had a range

In the atmosphere, O2is about

Which not a method for solid waste management>

Heat balance of earth is maintained by

Leaching of nutrients is due to

Lanthanides an actinides belong to following group of periodic table:

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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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In the atmosphere, O₂is about