Article Detail Which is the longest day in the year ? Answer: June 21 Similar Questions : 1. Which is the Largest lake of the world ? Answer: Caspian Sea (371,000 sq km) 2. Which is Place of heaviest rainfall ? Answer: Mausinram (Meghalaya) 3. Which is the highest Plateau ? Answer: Pamir, Tibet 4. Which is longest river of India Answer: Ganges 5. Which is Biggest ocean in the world ? Answer: Pacific ocean 6. Which is the deepest lake of the world ? Answer: Lake Baikal 7. Which is biggest planet ? Answer: Jupiter Read more from - Longest and Largest