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

The region of earth capable of supporting life is

Question # 2

Ecology is a science of environment and deals specially with

Question # 3

Ozone depletion in stratosphere shall result in

Question # 4

What is the cause of water pollution

Question # 5

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

Question # 6

Atomospheric pollutant is

Question # 7

Fungicides are the pesticides which

Question # 8

Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution

Question # 9

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

Question # 10

Biodegradable pollutant is

Question # 11

The film forming components of paints are

Question # 12

Which heavy metals do not have any safe limits

Question # 13

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

Question # 14

Which one is not a pollutant normally?

Question # 15

Most hazardous metal pollutant of automobile exhaust is

Question # 16

Water is often treated with chlorine to

Question # 17

SO2and NO2produce pollution by increasing

Question # 18

In the atmosphere, CO2is about

Question # 19

Photochemical smog is caused by

Question # 20

Potable water is considered to be

Question # 21

B.O.D is connected with

Question # 22

Ozone hole is maximum over

Question # 23

Water pollution is mainly due to

Question # 24

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

Question # 25

BOD is

Question # 26

The largest item which is recycled is

Question # 27

Which causes water pollution?

Question # 28

Which of the following human activities are contaminating surface and ground waters

Question # 29

The normal amount of overhead ozone is about

Question # 30

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

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
  • 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
  • T
    tayyab ali 20 - May - 2024 19 Min 22 Sec 80/120

ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 As it passes into food chain, the concentration of DDT
A. Remains same
B. Decreases
C. Increases
D. Unpredictable
2 The amount of Si in the lithosphere is about
A. 27.72%
B. 30.35%
C. 35.30%
D. 40.21%
3 Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?
A. Ozone
B. Nitrous oxide
C. Sulphure dioxide
D. Carbon monoxide
4 The normal amount of overhead ozone is about
A. 250 Du
B. 300 DU
C. 350 DU
D. 400 DU
5 Which heavy metals do not have any safe limits
A. As
B. Hg
C. Cr
D. All of these
6 The region of earth capable of supporting life is
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
7 When chlorofluoro carbon are subjected to U.V. they form
A. Cations
B. Anions
C. Free radicals
D. None of these
8 Photochemical smog is caused by
A. CO
B. CO2
C. O3
D. NO2
9 In water the most important oxidizing agent is dissolved molecular oxygen which ranges from
A. 2 - 4 ppm
B. 4 - 6 ppm
C. 2 - 5 ppm
D. 4 - 8 ppm
10 SO2and NO2produce pollution by increasing
A. Alkalinity
B. Acidity
C. Neutrality
D. Buffer action

Test Questions

Is this page helpful?