IBPS PO General Awareness: Environmental Science questions with solutions

Q1. Ozone hole refers to

1. hole in ozone layer
2. decrease in the ozone layer in troposphere
3. decrease in thickness of ozone layer in stratosphere
4. increase in the thickness of ozone layer in troposphere

Answer: decrease in thickness of ozone layer in stratosphere

The ozone hole is not an actual hole; it refers to a significant thinning of the ozone layer. This thinning occurs mainly in the stratosphere, where the ozone layer is located.