According to Central Pollution Control Board (CPCB), particulate size ________ micrometres or less in diameter are responsible for causing the greatest harm to human health.
2.5
Particulate matter is classified by aerodynamic diameter. CPCB and WHO identify PM2.5 — particles of 2.5 micrometres or less — as the most hazardous, because they bypass the upper airway defences and penetrate deep into the alveoli, even entering the bloodstream and triggering cardiovascular and respiratory disease.
PM10 causes upper-respiratory irritation but is less harmful than PM2.5. Hence the answer is 2.5.
Similar Questions
_________ is an example of intrusive igneous rock.
As per physicists and their major contributions/discoveries, Which of the following pair is INCORRECT?
J. J. Thomson received the Nobel Prize in Physics for the discovery of _____.
In Microsoft Word, _______ allows us to move selected paragraphs to the right.
An absolute ________ contains the complete address of a file on the Internet.
What is the full form of JPEG?
Netscape Navigator is a ________.
Who discovered Penicillin?
________ are designed to read and interpret HTML.
Who invented the electric tram?
Important Questions from Science Technology and Inventions
________ is the smallest unit of data in a computer.
Latent heat of vaporization of steam is ________.
_________ is an example of intrusive igneous rock.
The first satellite for serving the education sector is:
In physics, the particles called 'Higgs Boson' are also known as:
