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	Water exist in only	A. One state B. Two state C. Three states D. 4 states
2	Sea gets polluted bu accidental oil spills and	A. Atmospheric pressure B. Nitrogen gas C. Cargo oil tankers D. Aero plane
3	Chemicals used to kill pests are:	A. Herbicides B. Insecticides C. Pesticides D. fungicides
4	Oceans cove ____________ percent of the surface of the earth	A. 60 B. 70 C. 80 D. 97
5	Detergents are surfactants and they reduce the	A. B.P. of water B. Surface tension of water C. Wetting ability of water D. None of these
6	Hydrosphere covers the surface of erath:	A. 70.8% B. 71.8% C. 72.8% D. 73.8%
7	Ozone is produced in regions:	A. tropical B. Polor C. antaric D. equator
8	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. low value B. higher value C. both values D. none of these
9	Which factor is helping to reduce the environmental pollution	A. Urbanization B. Industrialization C. Increase of plantation D. Rapid growth of population
10	Exposure to CO results in	A. Headche B. Fatigue C. Unconsciousness 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

Atmosphere consists of gasses:

The layer of earth around the earth is called:

Chlorination of water is effective for

Hydrocarbons, SO2, CO, NH3nitrogen oxides and compounds of fluorine are called

Ozone is a gas having boiling point

Ozone gas has boiling point:

Chemicals used to kill pests are:

The pH of the rain water in areas where acid rain is the cause of pollution may be

Which of following is primary pollutants

Which one of the pollutants of automobile exhausts affects the nervous system or produces mental diseases

Which is not an air pollutant

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

Solid waster of the city is disposed off by dumping in a landfill. Which of the following gas is produced in the landfill

Polar ice caps can melt due to

Water is made disinfectant during purification of water to the step:

Fungicides are the pesticides which

Which is not a component of environment?

Chlorofluorocarbons and aerosols are inert in sphere:

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

Eleven elements made part of earth mass:

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

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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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Hydrocarbons, SO₂, CO, NH₃nitrogen oxides and compounds of fluorine are called