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

A single chloride free radical can destroy the ozone molecules

Question # 2

Region of earth capable of supporting life is called:

Question # 3

Which is the most toxic among the given?

Question # 4

Polar ice caps and glaciers consists total earth water:

Question # 5

The reason of acid rains is

Question # 6

Chose a point which is not included in the components of environment

Question # 7

Polar ice caps can melt due to

Question # 8

A single free chlorine redical can destroy ozone molecules upto:

Question # 9

Surface and ground water sources are contaminated by various human activities which of the followings is not a human activity that causes contamination in fresh water

Question # 10

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

Question # 11

Which is unnecessary for purification of water for drinking purposes

Question # 12

Potable water is considered to be

Question # 13

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

Question # 14

Water in swimming pools is purified by adding

Question # 15

Atmosphere consists of gasses:

Question # 16

Transformation is a cyclic process in which used plactic is

Question # 17

In purification of potable water the coagulant used is:

Question # 18

Leachate contains:

Question # 19

What is component of environment?

Question # 20

Ozone is effectively removed by

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MCAT Chemistry Chapter 21 Important MCQ's

Sr.# Question Answer
1 Lead pollution is mainly due to
A. Metallic pollution
B. Space pollution
C. Acid rain
D. Cd pollution
2 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
3 CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy
A. 10,000
B. 20,000
C. 100,000
D. 50,000
4 Materials suspended in water or present as colloidal form in raw water are removed by:
A. aeration
B. coagulation
C. chlorination
D. treatment
5 Cyclone collector is used to reduce
A. Noise pollution
B. Air pollution
C. Water pollution
D. Radioactive pollution
6 Water bodies are included in:
A. Atmosphere
B. Hydrosphere
C. Lithosphere
D. All of these
7 Detergents are surfactants and they reduce the
A. B.P. of water
B. Surface tension of water
C. Wetting ability of water
D. None of these
8 Water is purified by:
A. Filtration
B. aeration
C. coagualation
D. All of these
9 Hydrosphere includes
A. Seas and rivers
B. Ocean & polar ice caps
C. Ground water
D. All of above
10 What is the morality of a solution containing 15g of urea is 500cm3 of solution?
A. 1M
B. 0.5M
C. 2M
D. 1.5M

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