Air Quiz Questions And Answers

The correct answer is 79%. Nitrogen makes up the majority of the Earth's atmosphere, with approximately 79% of the air being composed of this element. This high percentage of nitrogen is important for supporting life on Earth, as it is a crucial component of proteins and nucleic acids. It also plays a role in the nitrogen cycle, which is essential for the growth and development of plants and other organisms.

Nitrogen makes up the largest part of air. It constitutes about 78% of the Earth's atmosphere, making it the most abundant gas. Oxygen is the second most abundant gas in the atmosphere, followed by small amounts of other gases such as carbon dioxide and sulfur dioxide. However, nitrogen is the dominant gas and plays a crucial role in supporting life on Earth.

The given question asks for the two gases that make up over 90% of the air. The correct answer is nitrogen and oxygen. This is because nitrogen makes up about 78% of the air, while oxygen makes up about 21%. Together, these two gases account for over 90% of the composition of the air.

The bar chart shows the amounts of pollution in the atmosphere produced by petrol-driven vehicles and coal-burning power stations. Since the question asks for the source of pollution that produces the most carbon monoxide, we can compare the bar heights for carbon monoxide emissions from both sources. From the chart, it is evident that the bar representing vehicles is taller than the bar representing power stations, indicating that vehicles produce more carbon monoxide pollution.

Helium is not an atmospheric pollutant because it is a noble gas and does not react with other elements or compounds in the atmosphere. Unlike carbon monoxide, oxides of nitrogen, and sulfur dioxide, which are all harmful pollutants released from various sources such as vehicles and industrial processes, helium is inert and does not contribute to air pollution or pose any health risks.

Hydrogen is not present in the air because it is the lightest and most buoyant gas, causing it to escape the Earth's atmosphere and dissipate into space. While carbon dioxide, nitrogen, and water vapor are all components of the Earth's atmosphere, hydrogen is not naturally found in significant quantities.

The correct answer is 0.1% because rare gases, such as helium, neon, argon, krypton, and xenon, make up a very small fraction of the Earth's atmosphere. These gases are present in trace amounts, with argon being the most abundant rare gas at approximately 0.93% of the atmosphere. Therefore, the percentage composition of rare gases in air is much lower than the other options provided.

Petrol engines produce lead as a pollutant, while power stations do not. This is evident from the bar chart, which shows the amounts of pollution in the atmosphere produced by both sources. Lead is specifically associated with petrol-driven vehicles, making it the correct answer.

The bar chart compares the pollution levels in the atmosphere caused by petrol-driven vehicles and coal-burning power stations. The question asks for the chemical element that constitutes the largest portion of "solid particles." Since coal is predominantly composed of carbon, it is reasonable to infer that carbon would make up the largest part of the solid particles emitted from coal-burning power stations.

The bar chart provides information about the levels of pollution caused by petrol-driven vehicles and coal-burning power stations. The question asks which source produces the most sulfur dioxide. Since the answer provided is "power stations," it suggests that the bar chart indicates that coal-burning power stations emit a higher amount of sulfur dioxide compared to petrol-driven vehicles.