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	Chemical like Al₂(SO₄) or alum are used in purification of water druing step:	A. aeration B. coagulation C. chlorination D. treatment
2	Which factor is helping to reduce the environmental pollution	A. Urbanization B. Industrialization C. Increase of plantation D. Rapid growth of population
3	Oceans cove ____________ percent of the surface of the earth	A. 60 B. 70 C. 80 D. 97
4	Which is not the affect of polluted air on environment	A. acid rain B. smog C. ozone D. global warming
5	The pH range of acid rain is?	A. 7-6.5 B. 6.5-6 C. 6-5.6 D. Less than 5
6	Ozone gas has boiling point:	A. Low B. High C. Medium D. Highest
7	Which of spectral lines when atoms are subjected to strong electric field is called:	A. Compton effect B. Stark effect C. Zeeman effect D. Photoelectric effect
8	Out of total amount of water available for human use is	A. 0.30% B. 0.2% C. 40% D. 50%
9	SO₂produced by volcanoes is about	A. 75% B. 67% C. 69% D. 70%
10	How much pesticides have been synthesized at present?	A. Four thousand B. Six thousand C. Eight thousand D. Ten thousand

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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

Chose a point which is not included in the components of environment

In water the most important oxidizing agent is dissolved molecular oxygen which ranges form

Smaller unit of biosphere is:

NO and NO2gases in atmosphere are represented by

The largest item which is recycled is

Residence time of methane in the atmosphere is

Water in swimming pools is purified by adding

Sea gets polluted bu accidental oil spills and

The main pollutant of leather in the waste water is due to the salt of:

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

Volcanoes produce SO2:

The respiration process taking place in animals depends on a difference in

What is the cause of water pollution

Hydrosphere covers the surface of erath:

Ozone layer is present in

Photo chemical smog contains ______ as main reactants

Which of the following does not contribute towards the formation of photochemical smog?

Amount of ozone in atmosphere is expressed in units:

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

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

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Set 12

Set 13

Set 14

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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 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

NO and NO₂gases in atmosphere are represented by

Volcanoes produce SO₂: