The most dominant source of Benzene emissions in ambient air is
Car exhausts
Benzene emissions in ambient air primarily originate from various sources. In this context, let's analyze the provided options to determine the most dominant source:
- Cement industry: The cement industry is not a significant source of benzene emissions. It primarily emits particulate matter and greenhouse gases.
- Cigarettes: While cigarette smoke does contain benzene, the total volume of emissions into the atmosphere is relatively low compared to other sources, due to the limited scale of smoking compared to vehicular activities.
- Car exhausts: This is indeed a dominant source of benzene emissions. Vehicles that use gasoline emit benzene, as it is a component of gasoline. Combustion engines release benzene into the atmosphere, making car exhausts a major contributor to benzene pollution in ambient air.
- Plants and varnish: Both plants and varnishes emit volatile organic compounds, but they are not major contributors of benzene to the atmosphere as compared to car exhausts.
The correct answer is Car exhausts. Cars and other vehicles, especially those running on gasoline, are known to emit benzene as a byproduct of combustion, making them a predominant source of benzene in ambient air.
Conclusion: Among the listed options, car exhausts are the most significant contributors to benzene emissions in the environment, due to the widespread use of gasoline vehicles in everyday transportation.
Similar Questions
Give below are two statements:
Statement I : Thermal pollution, usually effluent from cooling systems of power plants or other industries, alters water temperature in a lake or stream.
Statement II : Humans also cause thermal pollution by altering vegetation cover and run-off patterns.
In the light of the above statements, choose the correct answer from the options given below:
Major contributor to carbon monoxide emissions in metropolitan areas of India is/are:
The most important pollutants that cause degradation of water quality in rivers and streams are
(a) Bacteria
(b) Nutrients
(c) Metals
(d) Total dissolved solids
(e) Algae
Choose the most appropriate answer from the options given below:Major sources of oxygen demanding waste in fresh water systems are
(a) Agricultural run-off
(b) Food processing
(c) Ore mining
(d) Sewage effluent
(e) Landfill sites
Choose the correct option from those given below: -
Which of the following pollutant gases is not produced both naturally and as a result of industrial activity?
Which of the following pollutants is the major cause of respiratory diseases?
Assertion (A): In urban areas, smog episodes occur frequently in winters.
Reason (R): In winters, a lot of biomass is burnt by people for heating purposes or to keep themselves warm.
Choose the correct answer from the code given below:
With increase in temperature, the dissolved oxygen content in a water body will:
In the formation of Surface Ozone, which of the following do play an important role?
(a) Oxides of nitrogen
(b) Oxides of sulphur
(c) Sunlight
(d) Carbon monoxide
Choose the correct answer from the code given below:The most harmful types of environmental pollutants are:
Important Questions from Pollution
Which of the following isnota common component of photo-chemical smog?
Which of the following is NOT the main objective of Ganga action plan?
Which of the following pollutants causes water pollution ?
Presence of which pathogenic microbe in water is indication of contamination?
Which of the following isnota vehicular pollutant?
