1.

Which of the following can be used to reduce suspended particulate matter in atmosphere in mine areas ?

Answer»

NaCI
CaO
`CaCl_(2)`
All the above

Solution :ANHYDROUS calcium chloride is deliquescent in NATURE which absorbs moisture and forms a solution. Thus `CaCI_(2)`solution formed doesn't ALLOW the dust particles and other suspended darticulate MATTER to RISE.


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