Hay Fever Cause Identified
Hay fever, also known as allergic rhinitis, is an allergic reaction. It occurs when the immune system overreacts to substances called allergens that are typically harmless.
Analyzing Air Components and Hay Fever
The question asks to identify the cause of Hay fever from the given components found in polluted air. Let's examine the options:
- Carbon monoxide (CO): A poisonous gas resulting from incomplete combustion. It reduces the oxygen-carrying capacity of blood, causing poisoning, but not Hay fever.
- Particulate matter (PM): Microscopic solid or liquid particles suspended in the air. PM can irritate the lungs and worsen respiratory conditions like asthma, but it's not the specific trigger for Hay fever.
- Pollen: Tiny particles released by plants, trees, and grasses. Pollen grains are common airborne allergens that trigger Hay fever symptoms in sensitive individuals.
- Ozone (O3): A gas that forms a layer protecting Earth but is also a major air pollutant at ground level. Ground-level ozone irritates the airways and can worsen lung diseases, but it doesn't directly cause Hay fever itself.
Conclusion on Hay Fever Trigger
Pollen is the primary trigger for Hay fever. While other substances listed can be harmful components of polluted air, they do not cause the specific allergic immune response characteristic of Hay fever.
Therefore, Pollen is the correct answer.
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Statements:
'A': Carbon dioxide is not always a pollutant.
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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.
