MDCAT Chemistry Chapter 21 MCQ Test With Answer for (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.

MCQ's Test For MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test

Try The MCQ's Test For MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test

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MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test

00:00
Question # 1

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

Question # 2

The main pollution of leather tanneries in the waste is due to the salt of

Question # 3

Industrial effluents have toxic synthetic organic compounds as well as heavy metals like

Question # 4

A chemist says that glass must be a super cooled liquid. the reason that he might have in his mind is that glass has:

Question # 5

Polar ice caps and glaciers consists total earth water:

Question # 6

The percentage of SO2 produced by volcanoes is:

Question # 7

Why a C - Cl bond breaks by uv light

Question # 8

Which is unnecessary for purification of water for drinking purposes

Question # 9

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

Question # 10

Forms of waste products:

Question # 11

The concentration of dissolved molecular oxygen in water which acts as the most important oxidizing agent ranges from

Question # 12

Chemistry related to the study of environment affected by the chemicals and pollutants is called:

Question # 13

Volcanoes produce SO2:

Question # 14

Water cover earth surface more than:

Question # 15

Newspaper can be recycled again and again by how many times?

Question # 16

Nitrogen in the atmosphere is:

Question # 17

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

Question # 18

What is the cause of water pollution

Question # 19

SO2makes ___________ acid rains

Question # 20

Which one of the following is not air pollutant gas

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MCAT Chemistry Chapter 21 Important MCQ's

Sr.# Question Answer
1 Acidification of soil can leach metal:
A. Al
B. Hg
C. Pb
D. Ca
2 The normal amount of overhead ozone is about
A. 250 Du
B. 300 DU
C. 350 DU
D. 400 DU
3 Chloroform is carcinogenic:
A. Heart
B. Lungs
C. Liver
D. Kidney
4 The largest item which is recycled is
A. newspaper
B. plastic
C. aluminium
D. oil
5 Part of fresh water consumed in industry is:
A. 1%
B. 2%
C. 69%
D. 23%
6 Contamination of water of tanning industries is due to:
A. Cr(III)
B. Cr(VI)
C. Mn(III)
D. Mn(VII)
7 Synthetic organic pesticides formulated nowadays are more then:
A. One thousand
B. Ten thousand
C. Two thousands
D. Twenty thousand
8 A single chlorine free radical can destroy how many ozone molecules
A. 100
B. 100000
C. 10000
D. 10
9 Which is not an air pollutant
A. N2
B. CO
C. NO
D. N2O
10 Region of earth capable of supporting life is called:
A. Atmosphere
B. Hydrosphere
C. Lithosphere
D. All of these

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