classical smog.
Photochemical smog occurs in warm dry and sunny climate. Photochemical smog is an oxidizing smog whereas classical smog is an reducing smog.
Which smog has reducing nature?
So, the correct answer is ‘London smog‘.
Is classical smog reducing?
Classical smog is mixture of smoke, fog and sulphur dioxide. Chemically it is a reducing mixture.
Is classical smog oxidizing or reducing?
oxidising smog
Assertion :Classical smog is oxidising smog whereas photochemical smog is reducing smog. Reason: Classical smog occurs in warm, dru and sunny climate whereas photochemical smog occurs in cool humid climate.
Is photochemical smog a reducing agent?
Photochemical smog is sometimes called as Oxidizing smog as it contains high concentrations of oxidizing agents like Ozone, HNO3 whereas Classical Smog is called Reducing as it contains high concentrations of sulphur dioxide, which is a reducing agent.
Is London smog is oxidising in nature?
Photochemical smog is oxidising in nature. And London smog is reducing in nature. Thus, the statement ‘London smog is oxidising in nature’ is false.
How is photochemical smog reduced?
Photochemical smog has significant impacts on societies and living systems. Photochemical smog can be reduced by decreasing human reliance on fossil fuels.
Why is London smog called reducing smog?
This smog is formed by the mixture of smoke, fog, and sulfur dioxide. This smog also acts as a reducing agent in atmospheric pollution. Therefore, it is also known as reducing smog.
What is photochemical and classical smog?
Classical smog occurs in a cool, humid climate. Its components include smoke, fog and sulphur dioxide. It is reducing in nature. Photochemical smog occurs in a dry, sunny climate. Its components are PAN, acrolein, ozone, formaldehyde, nitric oxide.
Why is photochemical smog oxidizing?
Photochemical smog has high concentrations of ozone and HNO3 while classical smog has high concentrations of sulphur-dioxide. -These gases present in smog classify them as reducing or oxidizing agents. Oxidizing agents are those which reduce themselves to oxidize the other compound present in the solution.
Is photochemical smog an oxidising agent?
Photochemical smog is oxidising in nature.
What is oxidizing smog?
Oxidizing smogs form when those emitted (or primary) pollutants are transformed through photochemical reactions into secondary pollutants, the most important of which are the strong oxidant gases, ozone and peroxyacetyl nitrate.
Why is it called a photochemical smog?
What is photochemical smog? Photochemical smog is a mixture of pollutants that are formed when nitrogen oxides and volatile organic compounds (VOCs) react to sunlight, creating a brown haze above cities. It tends to occur more often in summer, because that is when we have the most sunlight.
What gases are reducing agents?
Common reducing agents include carbon (in the form of coke or coal), hydrogen gas, as well as those substances referred to in the food chemistry as antioxidants (e.g. ascorbic acid and vitamin E).
What causes reducing smog?
Drive less. Walk, bike, carpool, and use public transportation whenever possible. Take care of cars. Getting regular tune-ups, changing oil on schedule, and inflating tires to the proper level can improve gas mileage and reduce emissions.
Is ozone a reducing agent?
Ozone is a reducing agent: Ozone converts peroxides to oxides, and is converted to oxygen in exchange. Hydrogen peroxide is reduced to hydrogen by ozone.
Does ozone create brown smog?
Photochemical smog (brown smog) is formed by the reaction of nitrogen oxides and VOCs with tropospheric ozone. Nitrogen dioxide is from both natural and anthropogenic sources.
What type of smog is brown?
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 difference between brown and GREY smog?
The gray smog of older industrial cities like London and New York derives from the massive combustion of coal and fuel oil in or near the city, releasing tons of ashes, soot, and sulfur compounds into the air. The brown smog characteristic of Los Angeles and Denver in the late 20th cent. is caused by automobiles.
Is ozone photochemical smog?
Ground-level ozone constitutes one of the major components of photochemical smog, so called because of the photochemical reaction of air pollutants such as nitrogen oxides (NOx) and volatile organic compounds (VOCs) with ultraviolet light (sunlight); thus, the O3 levels vary strongly with season and the highest levels
What are the different types of smog?
At least two distinct types of smog are recognized: sulfurous smog and photochemical smog.