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?
Explanation
Hydrofluorocarbons (HFCs) are used as propellants in **aerosols**, blowing agents in **foam agents**, and as extinguishing agents in **fire retardants**,