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

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?

(a) Only one

(b) Only two

(c) Only three

(d) All four


Upsc pre 2023

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







Analysis  - Difficult


Explanation 

What is Hydrofluorocarbons (HFCs)?
 
They are a group of chemicals used for cooling and refrigeration

It is used in  insulating foams and aerosol propellants,  fire protection, Synthetic lubricant.

Expected question in future....

Why HFCs are used?

They 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 represent only 1% of total greenhouse gas but its impact is much higher than carbon dioxide per unit mass.

What is Kigali Amendment to montreal protocol?

It entered into force in 2019.

Under this, countries commit to cut the production and consumption of HFCs by more  than 80% over the next 30 years.

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