Consider the following: 1. Aerosols 2. Foam agents 3. Fire retardants 4. Lubricants. In the making of how…

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?
  1. Only one
  2. Only two
  3. Only three
  4. All four

Solution

HFCs are used in aerosols (propellants), foam-blowing agents, fire retardants, and as components in lubricants/refrigerants — all four uses are documented.

Asked in: UPSC Prelims 2023

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