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

Coal contains sulphur in it:

Question # 2

Photo chemical smog contains ______ as main reactants

Question # 3

99.5% mass of lithosphere is made of

Question # 4

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

Question # 5

Lithosphere has amount of silicon

Question # 6

Ozone layer is

Question # 7

Which is property of CO?

Question # 8

How much quantity of total water is available as fresh water

Question # 9

Which of the following human activities are contaminating surface and ground waters?

Question # 10

In big/metropolitan cities, atmosphere is mostly polluted due to

Question # 11

Which of the following is not a secondary pollutant

Question # 12

Detergents are surfactants and they reduce the

Question # 13

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

Question # 14

Suspended matter is settled in purification of water by:

Question # 15

Atmosphere consists of gasses:

Question # 16

A single free chlorine redical can destroy ozone molecules upto:

Question # 17

Which factor is helping to reduce the environment pollution

Question # 18

BOD is the oxygen demand with in day(s):

Question # 19

Chemicals used to kill herbs are:

Question # 20

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

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MCAT Chemistry Chapter 21 Important MCQ's

Sr.# Question Answer
1 Which is the most toxic among the given?
A. heavy metals
B. non-metals
C. Metals
D. Metalloids
2 Eleven elements made part of earth mass:
A. 97.5%
B. 98.5%
C. 99.5%
D. 100%
3 Ozone gas has boiling point:
A. Low
B. High
C. Medium
D. Highest
4 Incineration is a process in which solid waste is burned at high temperature ranging from
A. 500 to 600°C
B. 900 to 1000°C
C. 1000 to 1100°C
D. 600 to 700°C
5 The amount of oxygen in the lithosphere is about
A. 35.50%
B. 40.60%
C. 46.60%
D. 50.50%
6 Which of the following substance is not present in acid rain?
A. Sulphuric acid
B. Nitric acid
C. Sulphurous acid
D. Acetic acid
7 a hole used to dump the municipal wastes is called:
A. landfill
B. effluents
C. leachate
D. inclneration
8 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 
9 99.5% mass of lithosphere is made of
A. 03 elements
B. 8 elements
C. 11 elements
D. 15 elements
10 Surface and ground water sources are contaminated by various human activities. Which of the following is not human activity that causes contamination in fresh water
A. Live stock waste
B. Oil leaks and spills
C. Desposal of industrial effluents
D. Rain

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