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	In big/metropolitan cities, atmosphere is mostly polluted due to	A. Radioactive fall out B. Household waste C. Pesticide residue D. Automobile exhausts
2	Peroxyacetylnitrate (PAN) is an irritant to human beings and it affects:	A. Eyes B. Ears C. Stomach D. Nose
3	The pH range of the acid rain is	A. 6.5 - 6 B. Less than 5 C. 8 - 7.5 D. 7 - 6.5
4	Which step is unnecessary for purification of water for drinking purposes	A. aeration B. coagulation C. treatment with chlorine D. treatment with iodine
5	To purify water which has mud dissolved in it, a substance which coagulates the suspended particles is used. The coagulant may be	A. Ag⁺ B. Cu²⁺ C. Al³⁺ D. Si⁴⁺
6	Ozone in stratosphere extends upto km:	A. 0-15 km B. 10-15 km C. 15-40 km D. 15-25 km
7	Transformation is a cyclic process in which used plactic is	A. Remelted and styrene is added B. Converted into low quality substance C. Converted back into original components D. None of these
8	One of the environment problem is the formation of oil slicks when oil is spilled from tankers in sea water. Which treatment is suitable to remove oil slicks	A. blow air B. add Na₂CO₃ C. use a specially made sorbent having fluorine trapped in it D. Use a sorbent having Al₂O₃trapped in it
9	Which of the following substance is not present in acid rain?	A. Sulphuric acid B. Nitric acid C. Sulphurous acid D. Acetic acid
10	Hard water can block radiators due to formation of	A. Insoluble calcium and magnesium salts B. Insoluble sodium salts C. In soluble phosphate salts D. Insoluble potassium salts

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

Elements in lithosphere exist generally as:

Polar ice caps and glaciers consists total earth water:

Sulphate aerosols cause severe respiratory problems particularly among

Exhaust fumes of cars contain which poisonous gas

Nitrogen in the atmosphere is:

Density of water becomes maximum at

Chemicals used to kill fungi are:

Chemicals used to kill herbs are:

One of the environment problem is the formation of oil slicks when oil is spilled from tankers in sea water.Which treatment is suitable to remove oil slicks

Coagulation removes suspended particles in ran water:

Reason of pollution are:

Part of fresh water consumed in domestic purpose:

Amount of fresh water used by agriculture is

alum or aluminium sulphate used as coagulant in alkaline medium change into precipitate of radicals of alumimium.

Depletion of ozone is more during the month:

COD of water can be measured by

During thunderstorms, water dissolves

White marble buildings are effected by?

In addition to many pollutants present in ground water, a successful study was conducted to remove a highly Toxic chemical.What chemical is this

Lanthanides an actinides belong to following group of periodic table:

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

One of the environment problem is the formation of oil slicks when oil is spilled from tankers in sea water.
Which treatment is suitable to remove oil slicks