Photochemical smog is a type of air pollution that is characterized by a mixture of pollutants including ozone, nitric oxide, and unburnt hydrocarbons. It is typically formed when sunlight acts on these primary pollutants.
Let's examine the given options to determine the primary reactants of photochemical smog:
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Sulphur Hexafluoride and Soot
This option is incorrect. Sulphur hexafluoride is a gas used as an insulator in high-voltage equipment, and soot is particulate matter. They are not primary contributors to photochemical smog.
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Carbon Monoxide and Ozone
Although ozone is a component of photochemical smog, carbon monoxide is not a direct primary reactant in the formation of photochemical smog. Therefore, this option is incorrect.
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Nitric Oxide and Unburnt Hydrocarbons
This option is correct. Nitric oxide (NO) and unburnt hydrocarbons from vehicle emissions react in the presence of sunlight to form photochemical smog. The reaction involves complex chemical processes leading to the production of secondary pollutants like ozone.
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Peroxy Radicals and Sub-oxides
This option is incorrect. Although peroxy radicals are formed during the reactions leading to smog, they are not the primary reactants. Sub-oxides are not typically involved in the formation of photochemical smog.
Thus, the primary reactants of photochemical smog are Nitric Oxide and Unburnt Hydrocarbons.
Important Questions from Environmental pollution
Photochemical smog is a resultant of the reaction among
Which of the following is NOT responsible for the degradation of our environment?
With reference to furnace oil, consider the following statements:
1. It is a product of oil refineries.
2. Some industries use it to generate power.
3. Its use causes sulphur emissions into environment.
Which of the statements given above are correct?
Why is there a concern about copper smelting plants?
1. They may release lethal quantities of carbon monoxide into environment.
2. The copper slag can cause the leaching of some heavy metals into the environment.
3. They may release sulphur dioxide as a pollutant.
Select the correct answer using the code given below.
Magnetite particles, suspected to cause neurodegenerative problems are generated as environmental pollutants from which of the following?
1. Brakes of motor vehicles
2. Engines of motor vehicles
3. Microwave ‘Stoves within homes
4. Power plants
5. Telephone lines
Select the correct answer using the code given below.
