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

Ozone in stratosphere extends upto km:

Question # 2

The most important pesticides are:

Question # 3

Hardness which can be removed by boiling is called

Question # 4

Factors affecting quality of water:

Question # 5

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

Question # 6

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

Question # 7

Chemicals used to kill herbs are:

Question # 8

Main cause of reducing map is:

Question # 9

DDT is a:

Question # 10

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

Question # 11

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

Question # 12

Materials suspended in water or present as colloidal form in raw water are removed by:

Question # 13

Water in swimming pools is purified by adding

Question # 14

CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy

Question # 15

The eleventh concentration of metal cause clogs of gills in fish:

Question # 16

Electropositive character increases down the groups due to:

Question # 17

When chlorofluoro carbon are subjected to U.V they form

Question # 18

The pH range of acid rain is?

Question # 19

Natural water is

Question # 20

Chloroform is carcinogenic:

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MCAT Chemistry Chapter 21 Important MCQ's

Sr.# Question Answer
1 Chemical equilibrium involving  reactants and products in more than one phase is called:
A. Homogeneous 
B. Heterogeneous 
C. Dynamic
D. Static
2 Chemicals used to kill fungi are:
A. Herbicides
B. Insecticides
C. Pesticides
D. fungicides
3 The temperature in the incineration process has a range:
A. 900 to 1000°C
B. 650 to 1100°C
C. 950 to 1300°C
D. 500 to 900°C
4 Lithosphere extends upto kilometer of earth crust in depth:
A. 10 km
B. 100 km
C. 1000 km
D. 10000 km
5 Ozone is produced in regions:
A. tropical
B. Polor
C. antaric
D. equator
6 Proxy acetyl nitrate (PAN) is an irritant to human beings and it affect
A. Nose
B. Stomach
C. Eyes
D. Ears
7 Global warming is mainly caused by ______ radiations
A. UV
B. I.R
C. gama
D. X-rays
8 HOCl is a compound:
A. Polor inorganic
B. organic
C. Ionic
D. covalant
9 When chlorofluoro carbon are subjected to U.V they form
A. Cations
B. Aninons
C. Free radicals
D. None of these
10 The semi solid wastes in landfills is called:
A. Landfill
B. effluents
C. Leachate
D. Incineration

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