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

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ECAT Chemistry Chapter 27 Environmental Chemistry

00:00
Question # 1

Which heavy metals do not have any safe limits

Question # 2

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

Question # 3

SO2and NO2produce pollution by increasing

Question # 4

What is the cause of water pollution

Question # 5

In water the most important oxidizing agent is dissolved molecular oxygen which ranges from

Question # 6

Soil remediation means

Question # 7

Which gasses are produced from landfills

Question # 8

The pH range of the acid rain is

Question # 9

Spraying of DDT produces pollution of

Question # 10

Increasing skin cancer and high mutation rate are due to

Question # 11

Depletion of ozone layer is due to

Question # 12

Ecosystem is a smaller unit of

Question # 13

Which is not a component of environment

Question # 14

Ozone hole is maximum over

Question # 15

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

Question # 16

The region of earth capable of supporting life is

Question # 17

Which of the following is not an air

Question # 18

Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic

Question # 19

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 20

Soil salinity can be measured by

Question # 21

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

Question # 22

Swage water is purified by

Question # 23

Acid rain is due to increase in atmospheric concentration of

Question # 24

Which is not a method for solid waste management

Question # 25

Eutrophication causes reduction in

Question # 26

NO and NO2gases in atmosphere are represented by

Question # 27

UV radiations bring about

Question # 28

DDT is

Question # 29

The film forming components of paints are

Question # 30

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

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Pollutant of automobile exhausts that affects nervous system/produces mental diseases is
A. Mercury
B. Lead
C. Nitrogen oxide
D. Sulphuric oxide
2 SO2and NO2produce pollution by increasing
A. Alkalinity
B. Acidity
C. Neutrality
D. Buffer action
3 UV radiations bring about
A. Skin cancer
B. Mouth cancer
C. Lung cancer
D. Liver cancer
4 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
5 Environmental pollution affects
A. Biotic components
B. Plants only
C. Man only
D. Biotic and abiotic components of environment
6 Which heavy metals do not have any safe limits
A. As
B. Hg
C. Cr
D. All of these
7 Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution
A. Live stock waste
B. Agricultural pesticides
C. Oil breaks and spills
D. All of the above
8 Atomospheric pollutant is
A. CO2
B. CO
C. O2
D. N2
9 The 95.5% mass of Lithosphone is made of 11 elements i.e. O2, Si, Al, Fe, Ca, Na, K, Mg, Ti, H2and P. which element is present in trace amount
A. Iodine
B. Bromine
C. Lead
D. Carbon
10 The amount of Si in the lithosphere is about
A. 27.72%
B. 30.35%
C. 35.30%
D. 40.21%

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