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

Ozone is effectively removed by

Question # 2

Which is not an air pollutant

Question # 3

Residence time of methane in the atmosphere is

Question # 4

Ozone gas has boiling point:

Question # 5

Coagulation in the purification of water is carried out by

Question # 6

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

Question # 7

Which gas produces air pollution?

Question # 8

Water which forms scum with soap is called

Question # 9

Incineration is a process in which solid waste is burned at high temperature ranging from

Question # 10

Carbon Monoxide is:

Question # 11

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

Question # 12

Hard water can block radiators due to formation of

Question # 13

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

Question # 14

Why a C- C bond breaks by uv light

Question # 15

Coal contains percentage of sulphur:

Question # 16

Coagulation removes suspended particles in ran water:

Question # 17

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

Question # 18

Reason of pollution are:

Question # 19

Property due to which water acts as a universal solvent is

Question # 20

Chlorofluorocarbon, CF2Cl2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone

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MCAT Chemistry Chapter 21 Important MCQ's

Sr.# Question Answer
1 Ozone in stratosphere extends upto km:
A. 0-15 km
B. 10-15 km
C. 15-40 km
D. 15-25 km
2 Ozone acts as:
A. Pollutant
B. saver
C. oxidatant
D. All of these
3
The pH range of acid rain is?
A. 7-6.5
B. 6.5-6
C. 6-5.6
D. Less than 5
4 Which of the following factors is not used to determine the quality of water
A. COD
B. BOD
C. DO
D. Available chlorine
5 Chlorofluorocarbons and aerosols are inert in sphere:
A. troposphere
B. stratosphere
C. lithosphere
D. hydrosphere
6 Many petroleum products are:
A. coloured
B. colourless
C. testy
D. poisoinous
7 A single chloride free radical can destroy the ozone molecules
A. 100
B. 100000
C. 10000
D. 10
8 Soil remediation means
A. to make it suitable for cultivation of crops
B. to make it acidic
C. to make it alkeline
D. to add manure into it
9 Which of the following waste material is not recycled for use again
A. Glasses
B. Paper
C. Plastic toys
D. Hides of animals
10 Ecosystem is a smaller unity of
A. Nydosphere
B. Biosphere
C. Lithosphere
D. Attmosphere

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