UPSC Prelims 2023 · Question 30 of 97

UPSC Prelims 2023 question on Hydrofluorocarbons Aerosols Foam Agents

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
Show answer

Answer: D. All four

Analysis

Hydrofluorocarbons (HFCs) are a group of industrial chemicals primarily used for cooling and refrigeration. HFCs are entirely man-made.

Hence all four options are correct → Option (d) All four.

Statement by statement

Statement 1 – CORRECT: HFCs are primarily produced for use in refrigeration, air-conditioning, insulating foams and aerosol propellants.

Statement 2 – CORRECT: HFCs are used in foam agents (insulating foams).

Statement 3 – CORRECT: HFCs have minor uses as solvents and for fire protection (fire retardants).

Statement 4 – CORRECT: Synthetic lubricants are used in stationary HFC-based refrigeration equipment.

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