Q: Which one of the following statements correctly defines PM1 particles in air?
(a)These are suspended particles of diameter more than 10 micron
(b)These are the particles that are filtered by the nose during respiration
(c)These are extremely fine particles of diameter less than 1 micron
(d)These are coarse particles that penetrate directly through the lungs into the bloodstream
Correct Answer: (c)
The correct answer is (c): ये 1 माइक्रॉन से कम व्यास के अतिसूक्ष्म कण हैं. Subject: Indian Economy | Sub-topic: General