Article Detail Which is the lightest metal ? Answer: Lithium Similar Questions : 1. Which is the shortest day in the year ? Answer: December 22 2. Which is Biggest ocean in the world ? Answer: Pacific ocean 3. Which is the largest Mosque in World ? Answer: Masjid al Haram (Saudi Arabia) 4. Which is Highest Gallantry Award in India ? Answer: Paramveer Chakra 5. Which is Largest railway route in India ? Answer: Dibrugarh in Assam to Kannyakumari in Tamil Nadu. 6. Which is longest tributary river of India ? Answer: Yamuna 7. Which is smallest state by area of India ? Answer: Goa Read more from - Longest and Largest