[Solved] Consider the following: Aerosols Foam agents Fire retardants Lubricants In the making of how many of the above are hydrofluorocarbons used?

Q90. 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

Answer: 3

Option 1, 2, 3 are correct: 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

Option 4 is incorrect: Although HFCs are entirely produced for use in refrigeration, insulating foams and aerosol propellants and air-conditioning, with minor uses as flame retardents but they are not used for making lubricants.