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

UV radiations bring about

Question # 2

Swage water is purified by

Question # 3

Ozone in most of the tropical regions acts as a pollutant and causes

Question # 4

Ecology is a science of environment and deals specially with

Question # 5

Exposure to CO results in

Question # 6

To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be

Question # 7

Which one is the major reason for pollution in high cities?

Question # 8

Surface and ground water sources are contaminated by various human activities. Which of the followings is not a human activity that causes contamination in fresh water

Question # 9

Minamata disease is due to pollution of

Question # 10

Increasing skin cancer and high mutation rate are due to

Question # 11

Increased asthmatic attacks in certain seasons are related to

Question # 12

Spraying of DDT produces pollution of

Question # 13

Oceans cove ______ percent of the surface of the earth

Question # 14

Depletion of ozone layer is due to

Question # 15

SO2Makes ______ acid rains

Question # 16

The % of CO2is the atmosphere is

Question # 17

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

Question # 18

Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water

Question # 19

Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?

Question # 20

Soil salinity can be measured by

Question # 21

Which gasses are produced from landfills

Question # 22

Chloroflurocarbon releases a chemical harmful to ozone

Question # 23

In the atmosphere, O2is about

Question # 24

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

Question # 25

B.O.D is connected with

Question # 26

What is the cause of water pollution

Question # 27

Which one is the most toxic?

Question # 28

As it passes into food chain, the concentration of DDT

Question # 29

Shahi Qilla may be destroyed by

Question # 30

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

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
    Zaman Shehzad 24 - May - 2024 09 Min 53 Sec 95/120
  • M
    Muhammad Uzair 05 - Jun - 2024 03 Min 33 Sec 90/120
  • A
    Azeema Siddique Muhammad Siddique 13 - Mar - 2024 04 Min 24 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 is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these
2 Ecology is a science of environment and deals specially with
A. Stratosphere
B. Biosphere
C. Lithosphere
D. Hydrosphere
3 Air pollution is not caused by
A. Pollen grains
B. Hydroelectric power
C. Industries
D. Automobiles
4 Carbon monoxide is harmful to human beings as it
A. Is carcinogenic
B. Is antagonistic to CO2
C. Has higher affinity for hemoglobin as compared to oxygen
D. Is destructive to O3
5 Polycyolic aromatic hydrocarbons are taught to be
A. Disinfectant
B. Carcinogenic
C. Helpful
D. Reactive
6 The region of earth capable of supporting life is
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
7 UV radiations bring about
A. Skin cancer
B. Mouth cancer
C. Lung cancer
D. Liver cancer
8 In incinerating the waste is burnt at
A. 1000°C
B. 100°C
C. 2000°C
D. 1500°C
9 A single chlorine free radical can destroy how many ozone molecules
A. 100
B. 100000
C. 10000
D. 10
10 Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water
A. Low value
B. Higher value
C. Both values
D. None of these

Test Questions

Is this page helpful?