Paper 1 · People, Development and Environment
Statement I: Coarse (bigger) particles, called PM10, can irritate your eyes, nose and throat; dust from roads, farms, dry riverbeds, construction sites and mines are types of PM10. Statement II: Fine (smaller) particles, called PM2.5, are more dangerous because they can reach the deep parts of your lungs or even the blood. Which of the following is true?
- Coarse particles PM10 can irritate the eyes, nose and throat and come from dust sources
- Fine particles PM2.5 are more dangerous, reaching deep into the lungs or the blood
ABoth statements I and II are true ✓ Correct
BStatement I is true
CStatement II is true
DNeither statement I nor statement II is true
Correct answer: (A) Both statements I and II are true — Both statements are true, so that is the answer.
Explanation
★Both statements are true, so that is the answer.
★PM10 are coarse particles that irritate the eyes, nose and throat.
★So statement one is true.
★PM2.5 are fine particles that reach deep into the lungs or the blood and are more dangerous.
★So statement two is also true.
★Since both hold, both statements are true.
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