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

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Question # 1

99.5% mass of lithosphere is made of

Question # 2

Polycyclic aromatic hydrocarbons are taught to be

Question # 3

The range of UV-B is:

Question # 4

During incineration temperature range of non-rotating chamber is

Question # 5

Water cover earth surface more than:

Question # 6

Which heavy metals do not have any safe limits

Question # 7

Pathogens in raw water are killed in step:

Question # 8

Forms of waste products:

Question # 9

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

Question # 10

How many times a newspaper can be recycled

Question # 11

An excellent source of energy without causing pollution is

Question # 12

Three elements needed for the healthy growth of plants are

Question # 13

Which is the most toxic among the given?

Question # 14

The branch of chemistry interlinked with biology, physics, medicines, agriculture, public health and sanitary engineering etc. is:

Question # 15

The temperature of in the incineration of industrial and hazardous waste process has range

Question # 16

Which not a method for solid waste management>

Question # 17

Nitrogen in the atmosphere is:

Question # 18

Chlorofluorocarbons and aerosols are inert in sphere:

Question # 19

Ozone is effectively removed by

Question # 20

A pollutant affects

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MCAT Chemistry Chapter 21 Important MCQ's

Sr.# Question Answer
1 Increased awareness of environmental issues has led chemists 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
2 Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water
A. SO2
B. NO2
C. CO
D. a and b only
3 Carbon Monoxide is:
A. colouriess
B. orderless
C. high toxic
D. All of these
4 Water which forms scum with soap is called
A. Hard water
B. Soft water
C. Distilled water
D. Un distilled water
5 The Catalyst used in the contact tower for the manufacture of H2SO4  is easily poisoned by:
A. Nitrous oxide
B. Nitrogen gas
C. Arsenic oxide 
D. Carbon dioxide 
6 The destructive distillation of coal gives three products. which of following is not the product of destructive distillation of coal?
A. Coal tar
B. CO2
C. Coal gas
D. Coke
7 The most important pesticides are:
A. Herbicides
B. Insecticides
C. Fungicides
D. All
8 BOD is the oxygen demand with in day(s):
A. Four
B. Two
C. Three
D. Five
9 Ozone layer is high:
A. 20-23 km
B. 22-25 km
C. 23-26 km
D. 25-28 km
10 The eleventh concentration of metal cause clogs of gills in fish:
A. Al
B. He
C. Pb
D. Ca

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