General knowledge - Part 4 consists of 30 questions with answers that are related to details of Sri Lanka. These help to enhance your general knowledge and develop your intellectual abilities.

1. What is the official name of Sri Lanka?   The Democratic Socialist Republic of Sri Lanka
2. When Sri Lanka obtained freedom from the United Kingdom?   February 4, 1948
3. Who is the first prime minister of Sri Lanka?     D. S. Senanayake
4. Who is the first president of Sri Lanka?     William Gopallawa
5. Who is the first female prime minister of Sri Lanka?   Sirimavo Bandaranaike
6. When did Sri Lanka become a republic?    May 22, 1972
7. Who is the first executive president in Sri Lanka?    Junius Richard Jayewardene
8. Which year was introduced Executive Presidency in Sri Lanka?   1978
9. Who is the first female president of Sri Lanka?   Chandrika Bandaranaike Kumaratunga 
10. Who wrote the Sri Lankan national anthem?   Ananda Samarakoon
11. What is the longest river in Sri Lanka?     Mahaweli River (335 km)
12. What is the highest waterfall in Sri Lanka?   Bambarakanda Falls - 263 m (863 ft)
13. What is the biggest lake in Sri Lanka?    Kala Wewa Reservoir
14. Who built the Kala Wewa?   The King Datusena (459-477 CE)
15. When did Sri Lanka obtain membership in the United Nations?   December 14, 1955
16. What is the longest canal in Sri Lanka?    Yoda Ela (Jaya Ganga)
17. What is the highest mountain in Sri Lanka?  Pidurutalagala - 2,524 m (8,281 ft)
18. What is the national sport in Sri Lanka?    Volleyball
19. What is the national tree in Sri Lanka?    The Ironwood (Na Tree) / Botanical name is “Mesua Nagassarium”
20. What is the national flower in Sri Lanka?  Water Lily (Manel)
21. What is the national bird in Si Lanka?   Sri Lanka junglefowl (Walikukula)
22. What is the national animal in Sri Lanka?    Sri Lankan giant squirrel (Dandulena)
23. What is the national butterfly in Sri Lanka?    Ceylon Birdwing
24. What is the national anthem in Sri Lanka?    "Sri Lanka Matha"
25. How many provinces are in Sri Lanka?  Nine provinces (North Central, Uva, Northern, Central, North Western, Sabaragamuwa, Eastern, Western, and Southern)
26. How many districts are in Sri Lanka?  25 Districts
27. How many electoral districts are in Sri Lanka?  22 Electoral Districts
28. What is the capital of Sri Lanka?   Sri Jayawardenepura Kotte
29. What is the commercial city of Sri Lanka?  Colombo
30. What is the biggest national park in Sri Lanka?    Wilpattu National Park