Current Affairs Trivia Questions

Sulfur dioxide, carbon monoxide, and particulates are all examples of primary air pollutants. Primary air pollutants are directly emitted into the atmosphere from sources such as vehicles, industrial processes, and natural sources. These pollutants can have harmful effects on human health and the environment. Therefore, the statement that sulfur dioxide, carbon monoxide, and particulates are examples of primary air pollutants is true.

Nitrogen exists in the highest concentration in the Earth's atmosphere. It makes up about 78% of the atmosphere, followed by oxygen at around 21%. The remaining 1% consists of trace gases such as carbon dioxide, ozone, and other gases.

Sulphur dioxide can create smog, as it reacts with other pollutants in the atmosphere to form ground-level ozone. It can also create sulphuric acid, especially when combined with particulate matter, which can contribute to acid rain. Sulphur dioxide is released through the combustion of sulphur-containing fossil fuels, such as coal and oil. Therefore, all of the statements provided are true about sulphur dioxide.

The correct answer is "All of the above" because scrubbers, precipitators, and filters are all technologies used to control particulates in the industry. Scrubbers are devices that remove pollutants from exhaust gases, precipitators use an electrostatic charge to remove particles from the air, and filters physically trap particles.

Increased agricultural productivity worldwide is not a likely result of global warming. Global warming is expected to have negative impacts on agriculture, such as changing weather patterns, increased heat stress on crops, and increased pest and disease pressure. These factors can lead to decreased crop yields and reduced agricultural productivity, rather than an increase.

Carbon monoxide is a colorless, odorless gas that is produced by the incomplete combustion of fossil fuels. It is highly toxic and can be found in high concentrations in areas with heavy traffic or industrial activity. The single largest source of carbon monoxide emissions is from internal combustion engines, such as those found in cars and trucks. These engines release carbon monoxide as a byproduct of burning gasoline or diesel fuel. Therefore, the statement that the single largest source of carbon monoxide is from internal combustion engines is true.

Photochemical smog does not result from the mixing of ultraviolet light and carbon dioxide in the atmosphere. Instead, it is formed when sunlight reacts with pollutants such as nitrogen oxides and volatile organic compounds in the presence of heat. Carbon dioxide is not directly involved in the formation of photochemical smog.

The correct answer is "decreased due to lead free gasoline." Lead emissions have decreased since the early 1980s because lead free gasoline has been introduced. This change has led to a reduction in lead pollution in the environment.

Sulphur dioxide contributes to a variety of environmental problems, including acid rain, death of vegetation, loss of biodiversity in aquatic ecosystems, and photochemical smog. However, it does not directly cause damage to buildings. While sulphur dioxide can react with moisture in the air to form sulphuric acid, which can corrode certain materials, such as metals and limestone, it is not a significant contributor to overall building damage compared to other pollutants.

Carbon monoxide is not a major contributor to the greenhouse effect because it has a relatively short atmospheric lifetime and does not have the ability to trap heat in the same way that other greenhouse gases do. While carbon monoxide is a pollutant and can have negative impacts on human health, it does not have a significant impact on global warming or climate change.