MDCAT Chemistry Chapter 21 online mcq test with answers for chapter 21 (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.

Top Scorers Of MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test MCQ`s Test

M

Munaza 11 - Oct - 2022 00 Min 07 Sec 20/20
L

Laiba Khan 24 - Jul - 2022 02 Min 18 Sec 16/20
S

Sania Abbas 25 - Jul - 2022 06 Min 13 Sec 16/20
T

tahreem fatima 12 - Nov - 2022 00 Min 04 Sec 15/20
F

Filza Ahsan 11 - Nov - 2022 01 Min 33 Sec 15/20
F

Faiz Barvi443 19 - Mar - 2023 03 Min 29 Sec 14/20
B

Basit Khan 09 - Aug - 2022 06 Min 44 Sec 14/20
A

Amat Nur 27 - Jun - 2023 07 Min 07 Sec 14/20
A

Abdullah 11 - Apr - 2023 10 Min 50 Sec 14/20
D

Dania 01 - Jan - 2023 14 Min 03 Sec 14/20
A

Ali Ahmed Tauqeer 03 - Mar - 2024 03 Min 27 Sec 13/20
A

Anaya 07 - Jul - 2023 04 Min 28 Sec 13/20
U

Urooj Wajid 15 - Sep - 2022 06 Min 47 Sec 13/20
M

Meer Sadeed 07 - Sep - 2023 10 Min 50 Sec 13/20
R

Rana Ubaid Chohan 16 - Jul - 2022 10 Min 50 Sec 13/20

MCAT Chemistry Chapter 21 Important MCQ's

Sr.#	Question	Answer
1	Air pollution causes	A. Acid rain B. O₃ depletion C. Green House Effect D. All
2	Which is the most toxic among the given?	A. heavy metals B. non-metals C. Metals D. Metalloids
3	Many petroleum products are:	A. coloured B. colourless C. testy D. poisoinous
4	Site of land for landfill is selected based upon.	A. topography B. location of ground C. water table D. All of these
5	Water is considered pollutant when value of Do is	A. 6 PPM B. 8 PPM C. 03 PPM D. 10 PPM
6	The water is considered to be polluted when the concentration of oxygen in it is	A. 6 - 9ppm B. 6 ppm C. 8 ppm D. Less than 4pm
7	Heat balance of earth is maintained by	A. Atmosphere B. Hydrosphere C. Lithosphere D. Stratosphere
8	The largest item which is recycled is	A. newspaper B. plastic C. aluminium D. oil
9	The film forming components of paints are	A. resins B. thinners C. pigments D. driers
10	Which is not the condition for the formation of smog	A. there must be sufficient NO gas B. there must be sunlight to help photo chemical reactions to take place C. air must be blowing swifty D. there must be SO₂in the air

Latest Educational News Stories

Pakistan's Largest Database of Colleges and Universities

BS Programs

University Past Papers

University Results

Exam Results 2024

Study Abroad Programs and Opportunities for Pakistani Students

MDCAT Chemistry Chapter 21 MCQ Test With Answer for (Environmental Chemistry)

MCQ's Test For MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test

MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test

Which not a method for solid waste management>

Which gas produces air pollution?

The water is considered to be polluted when the concentration of oxygen in it is

How can heavy metal contamination like the presence of Hg or Pb may be removed from the soil

Exhaust fumes of cars contain which poisonous gas

Fungicides are the pesticides which:

The amount of oxygen in the lithosphere is about

Water cover earth surface more than:

Dissolved impurities of potable water can be separated by the process of

CFC's are known to cause depletion of ozone layer therefore their use has been banned in refrigerators and air conditioners. Which alternate compound may be suitable to replace CFC

The most important pesticides are:

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

Which factor is helping to reduce the environment pollution

The gases in the atmosphere are essential for sustaining life on earth. Thus oxygen is required for breathing. What for is carbon dioxide required

Nitrogen in the atmosphere is:

The force which hold the atoms together to form a compound is called:

The scope of environmental chemistry is to study:

Amount of fresh water used by agriculture is

Which is not the condition for the formation of smog

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

Prepare Complete Set Wise MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test MCQs Online With Answers

Set 1

Set 2

Set 3

Set 4

Set 5

Set 6

Set 7

Set 8

Set 9

Set 10

Set 11

Set 12

Set 13

Set 14

Set 15

Set 16

Set 17

Topic Test

Top Scorers Of MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test MCQ`s Test

MCAT Chemistry Chapter 21 Important MCQ's

Test Questions

Is this page helpful?

Share your comments & questions here

maryam

Alishba

Alishba