question_answer

                                                                                                                                                What is electroplating? What are its advantages?                                          

Answer:

       

CFCs stands for Chlorofluorocarbons. CFCs are used in refrigerators, air conditioners, aerosol   Sprays.

CFCs are considered as pollutants because these are depleting the useful ozone layer of the upper atmosphere. This happens as follows:

CFCs released into the air, go up and ultimately reach high into the atmosphere where the protective ozone layer exists. The Chlorofluorocarbons react with ozone gas of ozone layer and destroy it gradually.

This allows the harmful ultraviolet rays of the sun to reach on the earth and cause damage.