Asia is the largest continent on world. Asia covers about 30% of world land mass. Over 60% of human population reside on Asia Number of countries : 48 Number of land-locked countries: 12 Deepest Lake : Baikal Lake,Russia Widest Plateau: Tibetan Plateau Highest Plateau: Pamir Plateau, Roof of World Highest Mountain: Mount Everest,Nepal Largest Sea: Caspain Sea Biggest Desert: Arabian Desert Biggest Country:Russia (covers area of both asia and europe), China Smallest Country: Maldives Biggest land-locked country- Kazakshtan Double land-locked