1. Call drop problem has become one of the biggest problems for the 900 million-odd mobile subscribers in the country in recent times. Highlight the factors causing call drop problem and suggest some measures to deal with it.
3. Government has been promoting LPG as a clean and healthy cooking medium compared to traditional Indian cooking mediums like dung cakes and firewood. Highlight the benefits of using LPG over traditional mediums and what are the barriers in introducing it universally in India?