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	Which of the following human activities are contaminating surface and ground waters?	A. pesticides B. septic ranks C. petroleum and natural gas production D. all of these
2	The region of earth capable of supporting life is	A. Hydrosphere B. Lithosphere C. Biosphere D. Atmosphere
3	Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as	A. environment B. hydrosphere C. pollutant D. biosphere
4	Ozone layer is high:	A. 20-23 km B. 22-25 km C. 23-26 km D. 25-28 km
5	Which is the following is true about galvanic cell:	A. Reduction occurs at cathode B. Reduction occurs at anode C. Anode is negatively charged D. Chathode is positively charged
6	BOD means	A. Boron oxygen deuterium B. Biochemical oxygen demand C. Biochemical oxygen dissolved D. Biochemical oxygen death
7	Chemicals used to kill pests are:	A. Herbicides B. Insecticides C. Pesticides D. fungicides
8	Part of fresh water consumed in industry is:	A. 1% B. 2% C. 69% D. 23%
9	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. Live stock waste B. Oil leaks and spills C. Desposal of industrial effluents D. Rain
10	Which one of the following is not a component of environment	A. Biosphere B. Stratosphere C. Hydrosphere D. Lithosphere

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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

Depletion of ozone is more during the month:

Major cause of SO2 on global scale is

By the mid of 1980s depletion of total overhead ozone in antarctic region is

Which is used as a coagulant:

Biochemical oxygen demand (BOD) is the capacity of organic matter in natural water to consume oxygen with in a period of

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

HOCl is a compound:

Which of following is primary pollutants

Ozone layer is high:

Chemical equilibrium involving reactants and products in more than one phase is called:

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

Biochemical oxygen demand is the capacity of organic matter in natural water to consume oxygen

Ph of unpolluted rain water is

The process of coagulation can remove suspended solids in raw water about

The % of CO2in the atmosphere is

Coal contains sulphur in it:

Detergent greatly effects the

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

A single chloride free redical can destroy bow many ozene molecules?

Primary pollutants are:

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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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The % of CO₂in the atmosphere is