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	During thunderstorms, water dissolves	A. Dust particles B. HCl C. Nitric acid D. Clouds
2	How many times a newspaper can be recycled	A. 02 B. 05 C. 08 D. 10
3	Materials suspended in water or present as colloidal form in raw water are removed by:	A. aeration B. coagulation C. chlorination D. treatment
4	Chlorination of water is effective for	A. Killing pathogens B. Removing dust C. Removing hardness D. Increasing oxygen content
5	SO₂makes ___________ acid rains	A. carbonic acid B. Sulfuric C. Nitric acid D. All of these
6	Which is not the affect of polluted air on environment	A. acid rain B. smog C. ozone D. global warming
7	Pathogens in raw water are killed in step:	A. aeration B. coagulation C. chlorination D. treatment
8	Test of incomplete combustion of petrol in the presence of	A. CO₂ B. SO₂ C. NO₂ D. Co
9	Biological oxygen demand (BOD) is associated with	A. Organic matter B. Micro organisms C. Both a and b D. None
10	Lithosphere extends upto kilometer of earth crust in depth:	A. 10 km B. 100 km C. 1000 km D. 10000 km

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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

Which of spectral lines when atoms are subjected to strong electric field is called:

In incinerating the waste is burnt at

Temporary hardness can be removed by adding

Ozone layer is high:

Ratio of hydrogen (H) and oxygen (O) in water molecule by volume is

Ecosystem is a smaller unity of

BOD means

Which one of the following is an organic compound?

A large hole in the ozone layer over antarctica region was discovered in:

Materials suspended in water or present as colloidal form in raw water are removed by:

The temperature in the incineration process has a range:

To purify water which has mud dissolved in it, a substance which coagulates the suspended particles is used.The coagulant may be

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

HOCl is a compound:

Fungicides are the pesticides which

Coal contains sulphur in it:

Polar ice caps and glaciers consists total earth water:

Exposure to CO results in

The percentage of SO2 produced by volcanoes is:

Rigid rocky crust earth upto a depth of 100 km is called:

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

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Set 10

Set 11

Set 12

Set 13

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

Test Questions

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To purify water which has mud dissolved in it, a substance which coagulates the suspended particles is used.
The coagulant may be

The percentage of SO₂ produced by volcanoes is: