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 which forms scum with soap is called	A. Hard water B. Soft water C. Distilled water D. Un distilled water
2	The pH range of acid rain is?	A. 7-6.5 B. 6.5-6 C. 6-5.6 D. Less than 5
3	A single chlorine free radical can destroy how many ozone molecules	A. 100 B. 100000 C. 10000 D. 10
4	Which is not considered as pollutant	A. O₃ B. CO₂ C. NO₂ D. SO₂
5	It is a biodegradable pollutant	A. Salts of HG B. DDt C. Aluminum foil D. Domestic fuel
6	Coal contains sulphur in it:	A. 1-3% B. 1-6% C. 1-9% D. 1-12%
7	Which gas produces air pollution?	A. oxides of sulphur B. oxides of carbon C. all of these
8	Chemicals used to kill insects are:	A. Herbicides B. Insecticides C. Pesticides D. Fungicides
9	CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destory	A. 50,000 B. 10,000 C. 20,000 D. None of these
10	The temperature in the incineration process has a range:	A. 900 to 1000°C B. 650 to 1100°C C. 950 to 1300°C D. 500 to 900°C

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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

Factors affecting quality of water:

Which of the following is not a secondary pollutant

Heat balance of earth is maintained by sphere:

The water is considered to be polluted when the concentration of oxygen in it is

During incineration temperature range of non-rotating chamber is

The overall effect of the photochemical smog in the after noon is built up of

Which one of the following does not act as pollutant

The gases in the atmosphere are essential for sustaining life on earth. Thus oxygen is required for breathing. What for is carbon dioxide required

Residence time of methane in the atmosphere is

Chemicals used to kill pests are:

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

Eleven elements made part of earth mass:

Why is carbon monoxide called as pollutant? The reason is that

The smog having high contents of SO2is

Components of environment is (in km) around the earth:

Ozone is usually produced in the

Chloroform is carcinogenic:

Photochemical smog consists of higher concentration of:

Sulphate aerosols cause severe respiratory problems particularly among

Chromium (VI) is highly toxic and can cause

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

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Set 12

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Set 14

Set 15

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Set 17

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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 smog having high contents of SO₂is