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 one is not a pollutant normally?

Question # 2

Air pollution is not caused by

Question # 3

Which is not a component of environment

Question # 4

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

Question # 5

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

Question # 6

In incinerating the waste is burnt at

Question # 7

A single chlorine free radical can destroy how many ozone molecules

Question # 8

Eutrophication causes reduction in

Question # 9

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

Question # 10

One of the environmental problem is the formation of oil slicks when oil is spilled from tankers in sea water. Which treatment is suitable to remove oil slicks

Question # 11

The amount of oxygen in the lithosphere is about

Question # 12

Drained sewage has B.O.D

Question # 13

Soil remediation means

Question # 14

Swage water is purified by

Question # 15

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

Question # 16

Domestic waste mostly constitutes

Question # 17

What is the cause of water pollution

Question # 18

In the atmosphere, CO2is about

Question # 19

Water pollution is mainly due to

Question # 20

As it passes into food chain, the concentration of DDT

Question # 21

Carbon monoxide is harmful to human beings as it

Question # 22

Atomospheric pollutant is

Question # 23

Photochemical smog is caused by

Question # 24

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

Question # 25

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

Question # 26

The amount of Si in the lithosphere is about

Question # 27

Which heavy metals do not have any safe limits

Question # 28

Atmosphere of big/metropolitan cities is polluted most by

Question # 29

Which one of the following is not air pollutant gas

Question # 30

Which step is unnecessary for purification of water for drinking purposes

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Soil salinity can be measured by
A. Calorimeter
B. Potometer
C. Porometer
D. Conducitvity meter
2 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy
3 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
4 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone
5 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
6 BOD is
A. Biological oxygen deficit
B. Biosphere oxygen demand
C. Biological oxygen demand
D. None of the above
7 Exposure to CO results in
A. Headache
B. Fatigue
C. Unconsciousness
D. All of these
8 Which of the following waste material is not recycled for use again
A. Paper
B. Plastic
C. Hides of animals
D. Glass
9 Which of the following is not an air
A. N2
B. N2O
C. NO
D. CO
10 Ecology is a science of environment and deals specially with
A. Stratosphere
B. Biosphere
C. Lithosphere
D. Hydrosphere

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