What is the similarity between smog and fog?
What is the similarity between smog and fog?
Though they look the same, smog and fog are formed quite differently. Smog is a form of air pollution, resulting from chemical toxins dispersed into the atmosphere whereas fog is the accumulation of floating water droplets in the air.
What is responsible for the brownish haze visible during photochemical smog events?
Environmental Aspects of Air Pollution Photochemical smog is a brownish-gray haze caused by the action of solar ultraviolet radiation on atmosphere polluted with hydrocarbons and oxides of nitrogen.
Why is photochemical smog bad?
Photochemical smog has devastating effects on the environment. Some plants such as tobacco, tomato and spinach are highly responsive to ozone, so photochemical smog can decimate these sensitive crops, trees and other vegetation. Ozone causes necrotic (dead) patterns on the upper surfaces of the leaves of trees.
What is photochemical smog give example?
Photochemical smog is a type of smog produced when ultraviolet light from the sun reacts with nitrogen oxides in the atmosphere. It is visible as a brown haze, and is most prominent during the morning and afternoon, especially in densely populated, warm cities.
What is the chemical formula for photochemical smog?
Composition of Photochemical Smog NO2+hν→NO+O.
Which gas is not required for the formation of photochemical smog?
Smog (a.k.a. “photochemical smog”) can be formed just from nitrogen oxides and sunlight—without presence of VOC. This smog is chiefly nitrogen oxides (NOx) and ozone (O3). Smog cannot be formed from just VOCs and sunlight; oxides of nitrogen and an oxidizer (ozone) are required in the chemical reactions.
Which among the following is not required for the formation of photochemical smog * 1 point?
Oxide of nitrogen Was this answer helpful?
Which gas is highest in our environment?
Atmospheric levels of carbon dioxide—the most dangerous and prevalent greenhouse gas—are at the highest levels ever recorded.
What are the 5 main gases in the atmosphere?
Earth’s atmosphere is composed of about 78 percent nitrogen, 21 percent oxygen, 0.9 percent argon, and 0.1 percent other gases. Trace amounts of carbon dioxide, methane, water vapor, and neon are some of the other gases that make up the remaining 0.1 percent.
Which gas is absent in primitive Earth?
The primitive atmosphere of Earth was devoid of oxygen gas. In primitive atmosphere, hydrogen atoms were most numerous and most reactive.
What are the four main gases in air?
The dry composition of the atmosphere is mostly nitrogen and oxygen. It also contains fractional amounts of argon and carbon dioxide and trace amounts of other gases, such as helium, neon, methane, krypton, and hydrogen (NASA).
What are the components of the air we breathe?
Molecules in the air include primarily nitrogen and oxygen as well as water, carbon dioxide, ozone, and many other compounds in trace amounts, some created naturally, others the result of human activity.
What is the most important component of the air we breathe?
The majority of the air we breathe is made up of nitrogen and oxygen, though you’ll also find argon, carbon dioxide and other gases in trace amounts.
Which gas in the atmosphere is essential for respiration?
Oxygen gas
Who was the first person to breathe?
physician Ibn al-Nafis
Why does exhaled air make the Limewater Milky?
Exhaled air contains CO2 which turns lime water milky. Calcium oxide and water react to form only a single product, calcium hydroxide. So the reaction is a combination reaction.
What toxins do we breathe out?
When we take a breath, we pull air into our lungs that contains mostly nitrogen and oxygen. When we exhale, we breathe out mostly carbon dioxide.
Is breathing exhaled air harmful?
Measurement of exhaled breath is safe, rapid, simple to perform, and effort independent. Given that human breath contains upwards of 250 chemicals, the potential for developing new applications is high.
What do humans inhale?
When you inhale (breathe in), air enters your lungs and oxygen from the air moves from your lungs to your blood. At the same time, carbon dioxide, a waste gas, moves from your blood to the lungs and is exhaled (breathe out). This process is called gas exchange and is essential to life.