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

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Question # 1

Ozone hole refers to

Question # 2

Pollutant of automobile exhausts that affects nervous system/produces mental diseases is

Question # 3

Atmosphere of big/metropolitan cities is polluted most by

Question # 4

Eutrophication causes reduction in

Question # 5

The % of CO2is the atmosphere is

Question # 6

Which is not a method for solid waste management

Question # 7

Water which his considered to be safe for human consumption is known as

Question # 8

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

Question # 9

Phosphate pollution is caused by

Question # 10

Biodegradable pollutant is

Question # 11

DDT is

Question # 12

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

Question # 13

Which step is unnecessary for purification of water for drinking purposes

Question # 14

Which causes water pollution?

Question # 15

Chief air pollutant which is likely to deplete ozone layer

Question # 16

Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as

Question # 17

Burning of fossil fuels is the main source of pollution

Question # 18

Acid rain is due to increase in atmospheric concentration of

Question # 19

A single chlorine free radical can destroy how many ozone molecules

Question # 20

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

Question # 21

Atomospheric pollutant is

Question # 22

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 23

UV radiations bring about

Question # 24

Water pollution is mainly due to

Question # 25

SO2and NO2produce pollution by increasing

Question # 26

In the atmosphere, O2is about

Question # 27

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

Question # 28

Minamata disease is due to pollution of

Question # 29

Which one of the following is not air pollutant gas

Question # 30

Potable water is considered to be

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which gasses are produced from landfills
A. NH3
B. H2S
C. N2
D. All of these
2 Ozone hole is maximum over
A. Europe
B. Antarctica
C. Asia
D. Africa
3 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy
4 The pH range of the acid rain is
A. 8 - 7
B. 7 - 6.5
C. 6.5 - 6
D. Less than 5
5 Most hazardous metal pollutant of automobile exhaust is
A. Mercury
B. Lead
C. Cadmium
D. Copper
6 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
7 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
8 Biodegradable pollutant is
A. Plastic
B. Asbestos
C. Sewage
D. Mercury
9 Soil salinity can be measured by
A. Calorimeter
B. Potometer
C. Porometer
D. Conducitvity meter
10 The toxic organic compounds and heavy metals and metalloids results in contamination of
A. Surface water
B. Ground water
C. Both surface and ground water
D. Neither surface nor ground waters

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