Match the List – I with List – II.

List - I (Particulate Matter Terms)	List - II (Explanation)
A. Aerosol	I. Particles formed by incomplete combination with a mixture of carbon volatiles
B. Nano Particles	II. Particles with size less than 2.5 micrometers
C. Smoke	III. Particles with size less than 0.2 micrometer
D. Fine particles	IV. Any solid or liquid particle suspended in air

Choose the correct answer from the options given below:

Correct option is B

Option (b) is the correct answer.
Aerosol (A-IV): Aerosols refer to any solid or liquid particles suspended in air, which could include pollutants like dust, soot, and fine liquid droplets.
Nano Particles (B-III): Nano particles are defined as particles with a size of less than 0.2 micrometers (or 200 nanometers), often used in various fields of science and technology.
Smoke (C-I): Smoke consists of particles formed by incomplete combustion, typically involving a mixture of carbon and volatile organic compounds.
Fine particles (D-II): Fine particles (PM2.5) are those with a size less than 2.5 micrometers and are particularly harmful due to their ability to penetrate deep into the lungs.
Information Booster:
Aerosols include dust, pollen, soot, and liquid droplets, suspended in the atmosphere.
Nano particles are ultrafine particles typically smaller than 0.2 micrometers, used in technology but can be pollutants in the air.
Smoke results from incomplete combustion, releasing carbon particles into the air.
Fine particles (PM2.5) are small enough to cause respiratory and cardiovascular health issues.