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

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

Question # 2

The film forming components of paints are

Question # 3

The % of CO2is the atmosphere is

Question # 4

Spraying of DDT produces pollution of

Question # 5

The pH of the rain water in areas where acid rain is the cause of pollution may be

Question # 6

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

Question # 7

Soil remediation means

Question # 8

Phosphate pollution is caused by

Question # 9

UV radiations bring about

Question # 10

Soil salinity can be measured by

Question # 11

Which gasses are produced from landfills

Question # 12

Cyclone collector is used for minimizing

Question # 13

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

Question # 14

Which factor is helping to reduce the environmental pollution

Question # 15

Photochemical smog is caused by

Question # 16

Water is often treated with chlorine to

Question # 17

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

Question # 18

CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy

Question # 19

BOD is

Question # 20

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

Question # 21

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

Question # 22

SO2and NO2produce pollution by increasing

Question # 23

What is the cause of water pollution

Question # 24

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

Question # 25

Chief source of water and soil pollution is

Question # 26

In the atmosphere, CO2is about

Question # 27

In incinerating the waste is burnt at

Question # 28

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

Question # 29

Polycyolic aromatic hydrocarbons are taught to be

Question # 30

Environmental pollution affects

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Air pollution is not caused by
A. Pollen grains
B. Hydroelectric power
C. Industries
D. Automobiles
2 Which one is the major reason for pollution in high cities?
A. Fossil fuel
B. Acid rain
C. Heat dispersion
D. None of the above
3 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
4 Atmosphere of big/metropolitan cities is polluted most by
A. Automobile exhausts
B. Pesticide residue
C. Household waste
D. Radio-active fall out
5 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy
6 In incinerating the waste is burnt at
A. 1000°C
B. 100°C
C. 2000°C
D. 1500°C
7 Which of the following is not an air
A. N2
B. N2O
C. NO
D. CO
8 Phosphate pollution is caused by
A. Weathering of phosphate rocks only
B. Agricultural fertilizers
C. Phosphate rocks and sewage
D. Sewage and agricultural fertilizers
9 Burning of fossil fuels is the main source of pollution
A. Nitrogen oxide
B. Nitric oxide
C. Nitrous oxide
D. Sulphur dioxide
10 Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called
A. Primary pollutant
B. Secondary pollutant
C. Tertiary pollutant
D. None of these

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