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	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	A. avoid waste production B. use no solvent C. use a catalyst D. devise a multistep procedure for synthesis of new compounds
2	The eleventh concentration of metal cause clogs of gills in fish:	A. Al B. He C. Pb D. Ca
3	By the mid of 1980s depletion of total overhead ozone in antarctic region is	A. 20% B. 30% C. 40% D. 50%
4	Organic pollutants in water are measured by	A. DO B. COD C. Water logging D. PH
5	Pan is an irritant to human beings and it affects	A. Eyes B. Nose C. Hair D. Skin
6	Why a C- C bond breaks by uv light	A. Cl is most electronegative B. Cl is volatile C. C - Cl bond energy is smaller than that of C - H bond energy D. uv light provides energy which is sufficient to break C - Cl bond and not C - H bond
7	The layer of earth around the earth is called:	A. Atmosphere B. Hydrosphere C. Lithosphere D. Biosphere
8	The most important pesticides are:	A. Herbicides B. Insecticides C. Fungicides D. All
9	In incinerating the waste is burnt at	A. 1000°C B. 100°C C. 2000°C D. 1500°C
10	In addition to many pollutants present in ground water, a successful study was conducted to remove a highly Toxic chemical.What chemical is this	A. Cobalt B. Nickel C. Arsenic D. Sulphur

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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

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

Choose the chief air pollutant among the following which depletes ozone layer

The normal amount of overhead ozone is about in DU:

Chemicals used to kill insects are:

Ozone layer is

Which of the following waste material is not recycled for use again

The amount of oxygen in the lithosphere is about

Which of following is primary pollutants

The semi solid wastes in landfills is called:

Amount of fresh water used by agriculture is

Troposphere extends upto km:

Which of the following factors is not used to determine the quality of water

One of the environmental problem is the formation of oil slicks when oil is spilled form tankers in sea water. Which treatment is suitable to remove oil slicks

In the atmosphere, O2is about

The morality of the solution containing x grams ammonium sulfate in 500cm3 of the solution is 0.6 what is x?

White marble buildings are effected by?

Which of the following is not the required condition for the formation of smog

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

SO2 produced by volcanoes is about

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

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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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Alishba

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

In the atmosphere, O₂is about

SO₂produced by volcanoes is about