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

The main pollutant of leather in the waste water is due to the salt of:

Question # 2

The % of CO2in the atmosphere is

Question # 3

In water the most important oxidizing agent is dissolved molecular oxygen which ranges form

Question # 4

The process of coagulation can remove suspended solids in raw water about

Question # 5

The normal amount of overhead ozone is about

Question # 6

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

Question # 7

Coagulation removes suspended particles in ran water:

Question # 8

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

Question # 9

Which of the following substance is not present in acid rain?

Question # 10

Half of the mass of atmosphere is concentrated above earth at the hieght of

Question # 11

The layer of gases around the earth are called?

Question # 12

Coal contains sulphur in it:

Question # 13

The disposal of domestic refuse, commercial and industrial solid wastes are studied under the title

Question # 14

The pH range of the acid rain is

Question # 15

The yellow color present in the photo chemical smog is due to presence of the

Question # 16

The normal amount of overhead ozone is

Question # 17

Which is used as a coagulant:

Question # 18

Contamination of water of tanning industries is due to:

Question # 19

Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will not cause water pollution

Question # 20

Carbon Monoxide is:

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MCAT Chemistry Chapter 21 Important MCQ's

Sr.# Question Answer
1 Ocean contains part earth's water:
A. 95%
B. 96%
C. 97%
D. 98%
2 Oxides of sulphur react in atmosphere by various reactions to form:
A. sulphates
B. sulphites
C. sulphides
D. sulphate aerosols
3 0.1M HCI having pH =1.0 it is about 100 time stronger than acetic acid what will be the pH of acetic acid:
A. 0.1 
B. 1.3
C. 2
D. 3
4 The pH range of acid rain is?
A. 7-6.5
B. 6.5-6
C. 6-5.6
D. Less than 5
5 Chlorofluorocarbon, CF2Cl2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone
6 Which is the following is true about galvanic cell:
A. Reduction occurs at cathode
B. Reduction occurs at anode
C. Anode is negatively charged
D. Chathode is positively charged
7 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
8 A pollutant affects
A. Human affects
B. Quality of life
C. Functioning of ecosystem
D. All of these
9 The scope of environmental chemistry is to study:
A. Source of chemicals
B. Transportation of chemicals
C. Transportation of toxic chemical
D. All of these
10 Commonly used coagulants are ions of:
A. Ferrous
B. Al
C. Cr
D. Ferric

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