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The most common source of CFCs are refrigerants, but fire suppression systems for aircraft and aerosols also emit CFCs into the atmosphere. Chlorofluorocarbons (CFCs) are anthropogenic compounds that have been released into the atmosphere since the 1930s in various applications such as in air-conditioning, refrigeration, blowing agents in foams, insulations and packing materials, propellants in aerosol cans, and as solvents.
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The SI unit of force is ‘newton (N). The SI unit of measuring pressure is ‘newtons per square metre’ (N/m2) which is also called Pascal.
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Check revision notes for formulae : https://mycbseguide.com/cbse-revision-notes.html
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