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 layer is present in

Question # 2

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

Question # 3

The range of UV-B is:

Question # 4

The Catalyst used in the contact tower for the manufacture of H2SO4  is easily poisoned by:

Question # 5

The largest item which is recycled is

Question # 6

As the number of carbon atoms increase the number of isomers also increase. The six carbon compound hexane has as many as:

Question # 7

Requirement of macronutrient per acre of the land is

Question # 8

Coal contains percentage of sulphur:

Question # 9

Air pollution causes

Question # 10

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

Question # 11

Photo chemical smog contains ______ as main reactants

Question # 12

What is the cause of water pollution

Question # 13

A single chloride free radical of CFCs can destroy upto ozone molecules:

Question # 14

Ozone is a gas having boiling point

Question # 15

Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water

Question # 16

Solid waster of the city is disposed off by dumping in a landfill. Which of the following gas is produced in the landfill

Question # 17

Which one of the following is not air pollutant gas

Question # 18

During incineration temperature range of non-rotating chamber is

Question # 19

Potable water is considered to be

Question # 20

A single chloride free redical can destroy bow many ozene molecules?

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MCAT Chemistry Chapter 21 Important MCQ's

Sr.# Question Answer
1 The main pollution of leather tanneries in the waste is due to the salt of
A. Chromium
B. Copper
C. Chromium
D. Lead
2 Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg Toxic.
A. It attaches to sulphur of the disulphide link
B. Hg is a heavy metal
C. Hg is liquid at room temperature
D. Hg is non reactive chemically
3 Ozone layer is high:
A. 20-23 km
B. 22-25 km
C. 23-26 km
D. 25-28 km
4 The semi solid wastes in landfills is called:
A. Landfill
B. effluents
C. Leachate
D. Incineration
5 Primary pollutants are:
A. oxides of sulphur
B. oxides of carbon
C. oxides of nitrogen
D. All of these
6 Increased awareness of environment issues has led chemist to develop products and processes that do not impact on the environment in terms of pollution or depletion of sources. To help chemist to achieve this aim, some principles are drawn, which one is not the guiding principle
A. avoid waste production
B. use no solvent
C. use a catalyst
D. devise a multistep procedure for synthesis of new compounds
7 Half of the mass of atmosphere is concentrated above earth at the hieght of
A. 40 Km
B. 25-28 Km
C. 5-6 Km
D. 100 Km
8 Sulphate aerosols cause severe respiratory problems particularly among
A. Infants
B. Women
C. Young people
D. Old people
9 The film forming components of paints are
A. resins
B. thinners
C. pigments
D. driers
10 Hydrosphere includes
A. Seas and rivers
B. Ocean & polar ice caps
C. Ground water
D. All of above

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