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
1	Ozone layer is high:	A. 20-23 km B. 22-25 km C. 23-26 km D. 25-28 km
2	Main cause of reducing map is:	A. Combustion of coal B. NO and NO₂ C. Un-burnt hydrocarbons D. All of these
3	Boron, aluminium, gallium, indium and thallium belong to group lll-A of the periodic table show a decrease with increasing relative atomic mass:	A. Ionic character of the compounds B. The first ionization energy C. The basic character of the oxides D. The stability of +2 oxidation
4	Global warming is mainly caused by ______ radiations	A. UV B. I.R C. gama D. X-rays
5	SO₂makes ___________ acid rains	A. carbonic acid B. Sulfuric C. Nitric acid D. All of these
6	Which of the following is a macronutrient?	A. Boron B. Iron C. Copper D. Carbon
7	Part of fresh water consumed in industry is:	A. 1% B. 2% C. 69% D. 23%
8	Leachate contains:	A. fatty acids B. Bacteria C. Heavy metals D. All of these
9	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
10	What is component of environment?	A. Atmosphere B. Hydrosphere C. Lithosphere D. All of these

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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

Most harmful of biosphere is

Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water

In big/metropolitan cities, atmosphere is mostly polluted due to

Cyclone collector is used to reduce

Global warming is mainly caused by ______ radiations

A chemist says that glass must be a super cooled liquid. the reason that he might have in his mind is that glass has:

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

Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as

Ph of unpolluted rain water is

Water bodies are included in:

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

Test of incomplete combustion of petrol in the presence of

The suspended particles in the raw water can be removed by the

A single chloride free radical of CFCs can destroy upto ozone molecules:

Increased awareness of environmental issues has led chemists 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

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

BOD is the oxygen demand with in day(s):

Ozone is a gas having boiling point

NO and NO2gases in atmosphere are represented by

Lead pollution is mainly due to

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

NO and NO₂gases in atmosphere are represented by