Question
UPSC Prelims 2023 Question:
Consider the following
- Aerosols
- Foam agents
- Fire retardants
- Lubricants
In the making of how many of the above are hydrofluorocarbons used?
Answer (Detailed Solution Below)
Option 3: Only three
Detailed Solution
Explanation:
- Hydrofluorocarbons (HFCs) are a group of industrial chemicals primarily used for cooling and refrigeration. HFCs were developed to replace stratospheric ozone-depleting substances that are currently being phased out under the Montreal Protocol on Substances that Deplete the Ozone Layer.
- HFCs are entirely man-made. They are primarily produced for use in refrigeration, air-conditioning, insulating foams and aerosol propellants, with minor uses as solvents and for fire protection. HFCs are not used for making lubricants. So, points 1, 2 and 3 are correct and point 4 is not correct.
Therefore, option (3) is the correct answer.
Subject: Science & Technology | Miscellaneous(s&t)
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