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

Transformation is a cyclic process in which used plactic is

Question # 2

Primary pollutants are:

Question # 3

Exhaust fumes of cars contain which poisonous gas

Question # 4

Choose the correct statements

Question # 5

Term ozone hole is used for depletion of ozone during months of:

Question # 6

Lanthanides an actinides belong to following group of periodic table:

Question # 7

Nitrogen in the atmosphere is:

Question # 8

The film forming components of paints are

Question # 9

Components of environment is (in km) around the earth:

Question # 10

Many petroleum products are:

Question # 11

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

Question # 12

The ozone depletion in the stratophere is mainly due to the reaction of ozone with

Question # 13

Pan is an irritant to human beings and it affects

Question # 14

Polar ice caps can melt due to

Question # 15

Which one of the following does not act as pollutant

Question # 16

Ozone is present in layer around earth:

Question # 17

The normal amount of overhead ozone is

Question # 18

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

Question # 19

Potable water is considered to be

Question # 20

Electropositive character increases down the groups due to:

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MCAT Chemistry Chapter 21 Important MCQ's

Sr.# Question Answer
1 The normal amount of overhead ozone is about in DU:
A. 150
B. 250
C. 350
D. 450
2 Chloroform is carcinogenic:
A. Heart
B. Lungs
C. Liver
D. Kidney
3 Coagulation removes suspended particles in ran water:
A. 60%
B. 70%
C. 80%
D. 90%
4 Elements in lithosphere exist generally as:
A. metals
B. non-metals
C. metalloids
D. minerals
5 The toxic organic compounds and heavy metals and metalloids results in contamination of
A. surface water
B. ground water
C. both surface and ground water
D. neither surface nor ground waters
6 The overall effect of the photochemical smog in the after noon is built up of
A. Neutralization
B. oxidizing agent
C. Reducing agent
D. Activating agent
7 COD of water can be measured by
A. Cr2O3
B. Cr2O4-2ions
C. Cr2O7-2ions
D. None of these
8 Which one of the following is not a component of environment
A. Biosphere
B. Stratosphere
C. Hydrosphere
D. Lithosphere
9 In big/metropolitan cities, atmosphere is mostly polluted due to
A. Radioactive fall out
B. Household waste
C. Pesticide residue
D. Automobile exhausts
10 The temperature in the incineration of industrial and hazardons waster process had a range
A. 950 to 1300°C
B. 500 to 900°C
C. 250 to 500°C
D. 900 to 1000°C

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