What is the gas filled in the sky Ballon?Answer: HeliumWhich two rivers merge at Devprayag to form Ganges?Answer: Alakananda and Bhagirathi riversWhich is the deepest ocean trench on earth?Answer: Mariana TrenchWhat is the capital of Mizoram?Answer: AizawlWhich country does not have a capital city?Answer: Nauru does not have a capitalWhat is the capital of Romania?Answer: Bucharest is the capital of RomaniaWho are the Executive Heads of Union Territories?Answer: The Executive Head of the Union Territories is the PresidentWhen is World Turtle Day celebrated?Answer: It is celebrated on 23rd MayWhen is World Heritage Day celebrated?Answer: Celebrated on 18th AprilWhen is ``Hindi Divas'' celebrated in India?Answer: Celebrated on 14th September