Photochemical smog is a type of air pollution that occurs in urban areas and is formed through a series of complex chemical reactions involving sunlight, nitrogen oxides, and volatile organic compounds (VOCs).
Key components of photochemical smog include:
Ozone (O3)
Nitrogen oxides (NOx)
Volatile organic compounds (VOCs)
Peroxyacetyl nitrate (PAN)
Aldehydes
Among the given options, Peroxyacetyl nitrate (PAN) is a well-known component of photochemical smog.
Peroxyacetyl nitrate (PAN) is a secondary pollutant formed from the reaction of hydrocarbons, nitrogen oxides, and sunlight. It is a potent eye irritant and respiratory toxin.
Therefore, the correct answer is Peroxyacetyl nitrate.
Final Answer:
Peroxyacetyl nitrate.
Process | ΔH/kJmol−1 | ΔS/JK−1 |
A | -25 | -80 |
B | -22 | 40 |
C | 25 | -50 |
D | 22 | 20 |
List I | List II | ||
A | Physisorption | i | Single Layer Adsorption |
B | Chemisorption | ii | 20−40kJmol−1 |
C | N2(g)+3H2(g)—⇢Fe(s)—⇢2NH3(g) | iii | Chromatography |
D | Analytical Application or Adsorption | iv | Heterogeneous catalysis |
Given are two statements one is labelled as Assertion A and other is labelled as Reason R.
Assertion A : Magnesium can reduce Al2O3 at a temperature below 1350°C, while above 1350°C aluminium can reduce MgO.
Reason R : The melting and boiling points of magnesium are lower than those of aluminium.
In light of the above statements, choose the most appropriate answer from the options given below :
The work done in ergs for the reversible expansion of one mole of an ideal gas from a volume of 10 liters to 20 liters at 25° is
Two statements are given below
Statement I: Benzanamine can be prepared from phthalimide.
Statement II: Benzanamine is less basic than phenyl methanamine.
What are X and Z in the following reaction sequence?
What is Y in the following reaction sequence?
Observe the following set of reactions:
Correct statement regarding Y and B is:
What is X in the following reaction?