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

  • Total Questions20

  • Time Allowed20

Start Test Download PDF

MDCAT Chemistry Chapter 21 Environmental Chemistry Online Test

00:00
Question # 1

Exhaust fumes of cars contain which poisonous gas

Question # 2

The destructive distillation of coal gives three products. which of following is not the product of destructive distillation of coal?

Question # 3

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

Question # 4

As the number of carbon atoms increase the number of isomers also increase. The six carbon compound hexane has as many as:

Question # 5

Residence time of methane in the atmosphere is

Question # 6

Fungicides are the pesticides which

Question # 7

Industrial effluents have toxic synthetic organic compounds as well as heavy metals like

Question # 8

Polycyclic aromatic hydrocarbons are taught to be

Question # 9

Lithosphere extends upto kilometer of earth crust in depth:

Question # 10

Biochemical oxygen demand (BOD) is the capacity of organic matter in natural water to consume oxygen with in a period of

Question # 11

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

Question # 12

Chlorofluorocarbon, CF2Cl2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone

Question # 13

Choose the chief air pollutant among the following which depletes ozone layer

Question # 14

An excellent source of energy without causing pollution is

Question # 15

A single chlorine free radical can destroy how many ozone molecules

Question # 16

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

Question # 17

Ecology is a science of environment and deals specially with

Question # 18

Ozone is an allotropic form of:

Question # 19

The smog having high contents of SO2is

Question # 20

Depletion of ozone is more during the month:

Submit

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


Topic Test

00:00
Submit

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 Commonly used coagulants are ions of:
A. Ferrous
B. Al
C. Cr
D. Ferric
2 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
3 Augus smith discovered in the mid of seventeenth century:
A. acid
B. Base
C. Acid rain
D. Fertilizer
4 Part of fresh water consumed in domestic purpose:
A. 1%
B. 2%
C. 69%
D. 8%
5 Men residence time of methane in atmosphere in years is:
A. 1-7
B. 2-7
C. 3-7
D. 4-7
6 What is the cause of water pollution
A. Chemical and bacterial constants in live stock
B. The spilled oil in rivers and ponds
C. Wide spreads used of pesticides
D. All of these
7 Water is considered pollutant when value of Do is
A. 6 PPM
B. 8 PPM
C. 03 PPM
D. 10 PPM
8 Why a C- C bond breaks by uv light
A. Cl is most electronegative
B. Cl is volatile
C. C - Cl bond energy is smaller than that of C - H bond energy
D. uv light provides energy which is sufficient to break C - Cl bond and not C - H bond
9 How much quantity of total water is available as fresh water
A. 3%
B. 1%
C. 10%
D. 21%
10 The pH of the rain water in areas where acid rain is the cause of pollution may be
A. 6.5
B. 5.6
C. 4.5
D. 2.2

Test Questions