NURSING ANM AND GNM

NURSING EXAM QUESTIONS

TOXICOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What three components have to be present to create photochemical smog?
A
VOCS, PANS, Carbon Dioxide
B
VOCS, Ozone, Nitrogen Monoxide
C
Nitrogen Dioxide, Sunlight, and VOCS
D
Sulfur Dioxide, Nitrogen Dioxide, and Ozone
Explanation: 

Detailed explanation-1: -How is Photochemical Smog Formed? Photochemical form is formed by a complex series of chemical reactions involving sunlight, oxides of nitrogen, and volatile organic compounds that are present in the atmosphere as a result of air pollution.

Detailed explanation-2: -Process of Photochemical Smog Formation The formation of photochemical smog consists of three main ingredients. Moreover, these ingredients are nitrogen oxides, hydrocarbons, and sunlight. Nitrogen oxides and hydrocarbons are the by-products of fossil fuels-burning energy plants.

Detailed explanation-3: -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.

Detailed explanation-4: -Smog is made up of many chemicals including nitrogen oxides (NOx), sulphur dioxide (SOx), carbon monoxide (CO), and volatile organic compounds (VOCs), but the two main components of smog are particulate matter (PM) and ground-level ozone (O3).

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