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

  • Total Questions20

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MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test

00:00
Question # 1

Which factor is helping to reduce the environmental pollution

Question # 2

COD of water can be measured by

Question # 3

The semi solid wastes in landfills is called:

Question # 4

Proxy acetyl nitrate (PAN) is an irritant to human beings and it affect

Question # 5

Which of the following is not a secondary pollutant

Question # 6

Part of fresh water consumed in industry is:

Question # 7

Transportation causes to produce CO2 in atmosphere:

Question # 8

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

Question # 9

Hardness which can be removed by boiling is called

Question # 10

The bonding occurs among polar covalent molecules containing H and one of the small electronegative element such as O,F or N is called:

Question # 11

Soil remediation means

Question # 12

How much pesticides have been synthesized at present?

Question # 13

What is the morality of a solution containing 15g of urea is 500cm3 of solution?

Question # 14

Why is carbon monoxide called as pollutant? The reason is that

Question # 15

Acidification of soil can leach metal:

Question # 16

Nitrogen in the atmosphere is:

Question # 17

Organic pollutants in water are measured by

Question # 18

Ph of unpolluted rain water is

Question # 19

By the mid of 1980s depletion of total overhead ozone in antarctic region is

Question # 20

The amount of oxygen in the lithosphere is about

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MCAT Chemistry Chapter 21 Important MCQ's

Sr.# Question Answer
1 Ozone layer is
A. 25 - 28 km high
B. 26 - 29 km high
C. 24 - 27 km high
D. 20 - 28 km high
2 A single chloride free radical of CFCs can destroy upto ozone molecules:
A. 10
B. 100
C. 1000
D. 100000
3 Property due to which water acts as a universal solvent is
A. Polarity
B. It's ability to make hydrogen bond
C. Both A and B
D. Strong dipole dipole interaction
4 The semi solid wastes in landfills is called:
A. Landfill
B. effluents
C. Leachate
D. Incineration
5 The force which hold the atoms together to form a compound is called:
A. Dispersion forces
B. London forces
C. A chemical bond
D. Ven der wall's forces
6 Main cause of reducing map is:
A. Combustion of coal
B. NO and NO2
C. Un-burnt hydrocarbons
D. All of these
7 The main pollutant of leather in the waste water is due to the salt of:
A. Lead
B. Chromium (VI)
C. Copper
D. Chromium (III)
8 Why a C - Cl bond breaks by uv light
A. Cl is most electronegative
B. Cl is volatile
C. C - Cl bond energy is smaller than that of C - H bond energy
D. Uv light provides energy which is sufficient to break C - Cl bond and not C - H bond
9 Why a C- C bond breaks by uv light
A. Cl is most electronegative
B. Cl is volatile
C. C - Cl bond energy is smaller than that of C - H bond energy
D. uv light provides energy which is sufficient to break C - Cl bond and not C - H bond
10 Suspended matter is settled in purification of water by:
A. aeration
B. coagulation
C. chlorination
D. treatment

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