Consider the following : 1. Aerosols 2. Foam agents 3. Fire retardants 4. Lubricants In the making of how many of the above are hydrofluorocarbons used?
a
Only one
b
Only two
c
Only three
d
All four
Environmental PollutionHydrofluorocarbons (HFCs) ApplicationsHydrofluorocarbons (HFCs)AerosolsFoam agentsFire retardantsLubricantsgreenhouse gases