Question

The type of pollution that gets increased during the daytime and in the presence of ${\mathrm{O}}_3$ is

• A. Global Warming
• B. Reducing Smog
• C. Acid Rain
• D. Oxidizing Smog

Answer 1

The correct option is D

Oxidizing Smog

The explanation for the correct option:

D: Oxidizing Smog

• The most significant secondary pollutants are the powerful oxidant gases, ozone and peroxyacetyl nitrate, which are generated when those released (or main) pollutants undergo photochemical reactions and change into oxidizing smog.
• The overall reaction that took place n this:
• $$\begin{gathered} \mathrm{NO}\left(\mathrm{g}\right)+{\mathrm{O}}_2\left(\mathrm{g}\right)\to {\mathrm{NO}}_2\left(\mathrm{g}\right) \\ \mathrm{NO}\left(\mathrm{g}\right)+{\mathrm{O}}_3\left(\mathrm{g}\right)\to {\mathrm{NO}}_2+{\mathrm{O}}_2\left(\mathrm{g}\right) \\ \begin{array}{l}\mathrm{N}{\mathrm{O}}_2\left(\mathrm{g}\right)\stackrel{\mathrm{hv}}{\to }\mathrm{NO}\left(\mathrm{g}\right)+\left[\mathrm{O}\right]\end{array} \\ \left[\mathrm{O}\right]+{\mathrm{O}}_2\left(\mathrm{g}\right)\to {\mathrm{O}}_3\left(\mathrm{g}\right) \\ \mathrm{This}{\mathrm{O}}_3\mathrm{is}\mathrm{called}\mathrm{bad}\mathrm{ozone}. \\ {\mathrm{CH}}_4\left(\mathrm{g}\right)+{\mathrm{O}}_2\left(\mathrm{g}\right)\to {\mathrm{CH}}_2\left(\mathrm{g}\right)=\mathrm{O}+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right) \end{gathered}$$

The explanation for the incorrect options:

A. Global Warming:

• The phenomenon of a slow rise in temperature close to the earth's surface is known as global warming.
• Over the last century or two, this tendency has been noted.
• The earth's climate pattern has been altered by this alteration.
• Although the idea of global warming is still up for debate, scientists have presented evidence to support the idea that the earth's temperature is steadily increasing.

B. Reducing Smog:

• Due to its reducing agent properties, classic smog is also known as reducing smog.
• The presence of carbon (soot) particles and Sulphur dioxide contributes to the reducing nature.

C. Acid Rain:

• Due to air pollutants, notably the excessive amounts of Sulphur and nitrogen released by machinery and industrial operations, acid rain is made up of water droplets that are extremely acidic.
• Since this idea encompasses a variety of acidic precipitation, it is frequently referred to as acid rain.
• Both wet and dry processes are used to deposit acid.
• Any type of precipitation that removes acids from the atmosphere and deposits them on the earth's surface is referred to as wet deposition.

Final Answer: Therefore, option D is the correct option.