Which Indian state has its maximum area under the forest cover?

The person who has climbed Mount Everest the most time

Jana Gana Mana, was accepted as the National Anthem of India by the Constituent Assembly of India in which of the following years?

Headquarteres  of Reserve Bank of India is at

The agency of United Nations that was set up to strengthen the international cooperation in the field of education and improve the standards of education is

Where is the Tungabhadra sanctuary located?