2016 · Q35
In the study of pollution, SPM refers to
General ScienceChemistry
- ASulphur phosphorus matter
- BSulphur particulate matter
- CSolid particulate matter
- DSuspended particulate matter
Explanation
In pollution studies SPM stands for Suspended Particulate Matter — fine solid and liquid particles suspended in the air (measured alongside RSPM/PM10). It is not sulphur- or phosphorus-specific. Hence (D).