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 bonding occurs among polar covalent molecules containing H and one of the small electronegative element such as O,F or N is called:

Question # 2

Acidification of soil can leach metal:

Question # 3

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

Question # 4

Choose the correct statements

Question # 5

The layer of gases around the earth are called?

Question # 6

Ozone gas has boiling point:

Question # 7

The pH range of acid rain is?

Question # 8

Ozone layer is present in

Question # 9

Polar ice caps can melt due to

Question # 10

How much quantity of water is in the domestic use

Question # 11

Water is purified by:

Question # 12

Oceans, rivers, streams, leaks, polar ice caps, glaciers and group water reservoirs are included in

Question # 13

The destructive distillation of coal gives three products. which of following is not the product of destructive distillation of coal?

Question # 14

Pathogens in raw water are killed in step:

Question # 15

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

Question # 16

Ozone acts as:

Question # 17

It is a biodegradable pollutant

Question # 18

Lithosphere has amount of silicon

Question # 19

SO2and NO2cause pollution due to increase in

Question # 20

The amount of Si in the lithosphere is about

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MCAT Chemistry Chapter 21 Important MCQ's

Sr.# Question Answer
1 The water is considered to be polluted when the concentration of oxygen in it is
A. 6 - 9ppm
B. 6 ppm
C. 8 ppm
D. Less than 4pm
2 Coal contains percentage of sulphur:
A. 1-9%
B. 5-9%
C. 6-9%
D. 7-9%
3 The normal amount of overhead ozone is
A. 350 DU
B. 450 DU
C. 400 DU
D. 300 DU
4 The pH range of the acid rain is
A. 6.5 - 6
B. Less than 5
C. 8 - 7.5
D. 7 - 6.5
5 Men residence time of methane in atmosphere in years is:
A. 1-7
B. 2-7
C. 3-7
D. 4-7
6 Smaller unit of biosphere is:
A. specie
B. ecosystem
C. plankton
D. troposphere
7
Which of the following is not a heavy industry?
A. Iron
B. Fertilize
C. Paper
D. None
8 Unit of ozone is?
A. Debye
B. Dobson
C. Esu
D. Coulumb
9 Transformation is a cyclic process in which used plactic is
A. Remelted and styrene is added
B. Converted into low quality substance
C. Converted back into original components
D. None of these
10 Suspended matter is settled in purification of water by:
A. aeration
B. coagulation
C. chlorination
D. treatment

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