AIIMS 2019 Biology Air Pollution Assertion Reason Question
Assertion: 2.5µm or less than 2.5µm size of SPM is harmful for health.
Reason: Large particles are filtered by nasal cavity & throat
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Assertion is correct but Reason is incorrect
Both Assertion and Reason are incorrect
Correct Answer
Detailed Explanation
Option B is correct because the assertion accurately states that particulate matter (PM₂.₅) poses health risks due to its ability to penetrate deep into the respiratory system, while the reason correctly identifies that larger particles are filtered by the nasal cavity and throat. However, the reason does not explain why PM₂.₅ is harmful, as it pertains to smaller particles that bypass these filters.
Option A is incorrect because, although both statements are true, the reason does not explain the assertion. Option C is incorrect since both statements are true, and option D is incorrect because both statements are valid. Understanding the health implications of PM₂.₅ and the body's filtration mechanisms is crucial for recognizing air quality's impact on health.
Found an issue with this question?
Related Questions
More from Human Health and Disease
Cannabinoids are a group of chemicals, which interact with cannabinoid receptors present principally _________.
Bacteria like ______ and ______ are responsible for the disease pneumonia in humans which infects the alveoli of the lungs
________ represent one such group of viruses which cause one of the most infectious human ailments — the common cold
More from 2019
Variations caused by mutation, as proposed by Hugo de Vries, are:
Which is incorrect for paper chromatograph
A capacitor of capacitance 9nF having dielectric slab of εᵣ = 2.4 dielectric strength 20 MV/m and P.D. = 20V calculate area of plates.