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

In Antarctica ozone depletion is due to the formation of following compound

Question # 2

Spraying of DDT produces pollution of

Question # 3

The % of CO2is the atmosphere is

Question # 4

In purification of potable water the coagulant used is

Question # 5

The region of earth capable of supporting life is

Question # 6

The normal amount of overhead ozone is about

Question # 7

Photochemical smog is caused by

Question # 8

Oceans cove ______ percent of the surface of the earth

Question # 9

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

Question # 10

Sulphur dioxide affects

Question # 11

Fungicides are the pesticides which

Question # 12

A pollutant affects

Question # 13

Chromium (VI) is highly toxic and can cause

Question # 14

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

Question # 15

BOD is

Question # 16

Ozone hole refers to

Question # 17

Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due

Question # 18

Environmental pollution affects

Question # 19

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

Question # 20

A single chlorine free radical can destroy how many ozone molecules

Question # 21

Increasing skin cancer and high mutation rate are due to

Question # 22

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

Question # 23

Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called

Question # 24

Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?

Question # 25

Chromium (VI) is highly toxic and can cause

Question # 26

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

Question # 27

Which factor is helping to reduce the environmental pollution

Question # 28

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

Question # 29

Which heavy metals do not have any safe limits

Question # 30

SO2and NO2produce pollution by increasing

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
  • A
    Arian Ahmed 12 - Mar - 2024 00 Min 05 Sec 115/120
  • 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
  • R
    Rana Muzamil 12 - Mar - 2024 05 Min 04 Sec 100/120
  • 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

ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 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 reaction to take place
C. Air must be blowing swiftly
D. There must be SO2in the air
2 Ecology is a science of environment and deals specially with
A. Stratosphere
B. Biosphere
C. Lithosphere
D. Hydrosphere
3 Which gasses are produced from landfills
A. NH3
B. H2S
C. N2
D. All of these
4 Ecosystem is a smaller unit of
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
5 The normal amount of overhead ozone is about
A. 250 Du
B. 300 DU
C. 350 DU
D. 400 DU
6 BOD is
A. Biological oxygen deficit
B. Biosphere oxygen demand
C. Biological oxygen demand
D. None of the above
7 Soil remediation means
A. To make it suitable for cultivation of crops
B. To make it acidic
C. To make it alkeline
D. To add manure into it
8 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy
9 Which is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these
10 SO2Makes ______ acid rains
A. Carbonic acid
B. Sulfuric
C. Nitric acid
D. All of these

Test Questions

Is this page helpful?

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!