ECAT Pre Engineering Chemistry Chapter 27 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 27 Environmental Chemistry

Try The MCQ's Test For ECAT Chemistry Chapter 27 Environmental Chemistry

  • Total Questions30

  • Time Allowed30

Start Test Download PDF

ECAT Chemistry Chapter 27 Environmental Chemistry

00:00
Question # 1

When rain is accompanied by a thunderstorm, the collected rain water will have a pH value

Question # 2

Which of the following waste material is not recycled for use again

Question # 3

The toxic organic compounds and heavy metals and metalloids results in contamination of

Question # 4

The normal amount of overhead ozone is about

Question # 5

In purification of potable water the coagulant used is

Question # 6

DDT is

Question # 7

Which one is the most toxic?

Question # 8

Depletion of ozone layer is due to

Question # 9

Chief air pollutant which is likely to deplete ozone layer

Question # 10

Chloroflurocarbon releases a chemical harmful to ozone

Question # 11

When chlorofluoro carbon are subjected to U.V. they form

Question # 12

Which is not the condition for the formation of smog

Question # 13

Spraying of DDT produces pollution of

Question # 14

The pH range of the acid rain is

Question # 15

Fungicides are the pesticides which

Question # 16

Carbon monoxide is harmful to human beings as it

Question # 17

Mottling of teeth is due to presence of an element in drinking water

Question # 18

The film forming components of paints are

Question # 19

Ecosystem is a smaller unit of

Question # 20

The region of earth capable of supporting life is

Question # 21

As it passes into food chain, the concentration of DDT

Question # 22

The largest item which is recycled is

Question # 23

NO and NO2gases in atmosphere are represented by

Question # 24

Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone

Question # 25

Soil remediation means

Question # 26

Increasing skin cancer and high mutation rate are due to

Question # 27

UV radiations bring about

Question # 28

A single chlorine free radical can destroy how many ozone molecules

Question # 29

Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water

Question # 30

Chief source of water and soil pollution is

Submit

Prepare Complete Set Wise ECAT Chemistry Chapter 27 Environmental Chemistry MCQs Online With Answers


Topic Test

00:00
Submit

Top Scorers Of ECAT Chemistry Chapter 27 Environmental Chemistry MCQ`s Test

  • F
    Farzand Shah Farzand Shah 10 - Apr - 2024 03 Min 00 Sec 120/120
  • T
    Tanzeel Ur Rehman 28 - May - 2024 04 Min 15 Sec 115/120
  • M
    M Umer Arain 24 - Dec - 2024 00 Min 04 Sec 110/120
  • A
    Alyna Fatima 25 - Mar - 2024 03 Min 12 Sec 110/120
  • S
    Sarosh Amjad 21 - Jan - 2025 03 Min 44 Sec 110/120
  • A
    Abid Ali 19 - May - 2024 10 Min 33 Sec 110/120
  • A
    Alyna Fatima 25 - Mar - 2024 03 Min 28 Sec 105/120
  • Z
    Zainab Tahira 14 - Jun - 2026 03 Min 29 Sec 104/120
  • Z
    Zaman Shehzad 24 - May - 2024 09 Min 53 Sec 95/120
  • M
    Muhammad Uzair 05 - Jun - 2024 03 Min 33 Sec 90/120
  • Z
    Zargaii 92 29 - May - 2024 06 Min 59 Sec 90/120
  • C
    Cricket Expert's 27 - May - 2024 03 Min 01 Sec 85/120
  • M
    Muhammad Saleem 06 - Dec - 2024 13 Min 11 Sec 85/120
  • T
    tayyab ali 20 - May - 2024 19 Min 22 Sec 80/120
  • C
    Computer mail 10 - Feb - 2026 07 Min 01 Sec 76/120

ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which of the following forms a toxic substance in blood by combing with hemoglobin?
A. Carbon dioxide
B. Carbon monoxide
C. Oxygen
D. Methane
2 Which one is not a pollutant normally?
A. Hydrocarbons
B. Carbon dioxide
C. Carbon monoxide
D. Sulphur dioxide
3 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+
4 Chief source of water and soil pollution is
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above
5 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
6 Potable water is considered to be
A. Safe for human consumption
B. Not safe for human consumption
C. The surface water
D. The ground water
7 In the atmosphere, CO2is about
A. 0.01%
B. 0.03%
C. 0.05%
D. 0.09%
8 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone
9 A pollutant affects
A. Human health
B. Quality of life
C. Functioning of ecosystem
D. All of these
10 Which causes water pollution?
A. Smoke/fly ash
B. Automobile exhausts
C. Aeroplnes
D. 2,4-D and pesticides

Test Questions

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!