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

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

Question # 2

Leachate contains:

Question # 3

The range of UV-B is:

Question # 4

Residence time of methane in the atmosphere is

Question # 5

Which factor is helping to reduce the environment pollution

Question # 6

Which is not an air pollutant

Question # 7

Smaller unit of biosphere is:

Question # 8

Contaminated soil can be cleaned by various methods. Which method is not used to clean the soil

Question # 9

Hydrocarbons, SO2, CO, NH3nitrogen oxides and compounds of fluorine are called

Question # 10

Newspapers can be recycled again and again by how many times

Question # 11

Water in swimming pools is purified by adding

Question # 12

Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as

Question # 13

Diseases like dysentery, typhoid and hepatitis are caused by mixing of in water:

Question # 14

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

Question # 15

Natural water is

Question # 16

Ozone layer is

Question # 17

Which one of the following is not a component of environment

Question # 18

CFCs are mainly used in industries due to

Question # 19

Sea gets polluted bu accidental oil spills and

Question # 20

Water is purified by:

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MCAT Chemistry Chapter 21 Important MCQ's

Sr.# Question Answer
1 Hardness which can be removed by boiling is called
A. Permanent hardness
B. Temporary hardness
C. Stiffness
D. Toughness
2 Which gas produces air pollution?
A. oxides of sulphur
B. oxides of carbon
C. all of these
3 Chemicals used to kill pests are:
A. Herbicides
B. Insecticides
C. Pesticides
D. fungicides
4 How much pesticides have been synthesized at present?
A. Four thousand
B. Six thousand
C. Eight thousand
D. Ten thousand
5 Why is carbon monoxide called as pollutant? The reason is that
A. It combines with oxygen
B. It combines with haemoglobin
C. It inactivates glycolysis
D. It inactivates nerves
6 Which of the following factors is not used to determine the quality of water
A. COD
B. BOD
C. DO
D. Available chlorine
7 The disposal of domestic refuse, commercial and industrial solid wastes are studied under the title
A. Solid waste management
B. Waste management
C. Solid management
D. Semisolid management
8 What is the cause of water pollution
A. Chemical and bacterial constants in live stock
B. The spilled oil in rivers and ponds
C. Wide spreads used of pesticides
D. All of these
9 Peroxyacetylnitrate (PAN) is an irritant to human beings and it affects:
A. Eyes
B. Ears
C. Stomach
D. Nose
10 Which one of the following is not a component of environment
A. Biosphere
B. Stratosphere
C. Hydrosphere
D. Lithosphere

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