Question

PAN stands for
A. Per acetyl nitrate
B. Peroxyacetyl
C. Peroxyacetyl nitrate
D. Pyridine acetonitrile

Answer 1

Hint: PAN stands for polyacrylnitril and the genus found in the binobis, chimpanzees. And abbreviations of PAN strands for the panoramic X-ray. And also found in the brain such as a neuropsychiatric syndrome in the pediatric acute onset in the PANS.

Complete answer:
Peroxyacetyl nitrate that is less stable in the ozone as compared to the other oxidant. An ozone is a long range transport present in the peroxyacetyl nitrate that carries the oxides of nitrogen into the rural areas and causes the global troposphere from the resulting ozone formation.
Peroxyacetyl nitrate obtained from the photochemical oxidizing agents that formed from the
hydrocarbons such as found in the unburned petroleum with the ozone reactants. And commonly found
in the photochemical smog. In the presence of $N{O_x}$, PAN formed the oxidation of non-methane volatile organic compounds. $N{O_x}$ and NMVOCs have both anthropogenic and natural organic compounds found in the PAN. The contaminants released from the atmosphere by combustion of organic fuels obtained by the resulting photochemical reactions are the family of peroxyacetyl nitrates. And also responsible for the adverse plant injury in the highly polluted areas.

Therefore the correct option is (C).

Note: Peroxyacetyl nitrate is also known by the other name such as peroxyacetyl nitrate and present in the photochemical smog of the secondary pollutant ozone. And ${C_2}{H_3}N{O_5}$ is the formula for the peroxyacetyl nitrate and an unstable highly oxygenated compound. PAN decomposes into the nitrogen oxides and formation of the ozone in the lower regions of the atmosphere.