Question

Role of CFC present in atmosphere is

• A. Reduction in ozone
• B. Ozone formation
• C. Formation of leghaemoglobin
• D. Enhance chlorophyll formation

Answer 1

The correct option is A Reduction in ozone

The ozone layer is part of the earth's atmosphere. Ozone is basically found in the stratosphere. Ozone layer contains the high concentration of ozone. It's is vital to human life on earth because it absorbs biologically harmful ultraviolet radiations from the sun. Direct exposure to such rays can cause serious illness and skin problems. The main cause of ozone depletion is manufactured chemicals especially CFCs, these compounds reach the stratosphere by winds, where they release halogen atoms through photodissociation and cause the breakdown of ozone into oxygen. The ozone hole formed due to this increase the exposure of direct UV rays on earth carrying the potential risk of skin cancer and other negative effects.

Hence, the correct answer is 'Reduction in ozone'