Multiple choice general knowledge Capital of Laos Bangkok Moroni Librevile Vientiane Reveal answer Fill a bubble to check yourself D Correct answer Explanation Vientiane is the capital and largest city of Laos. Bangkok is the capital of Thailand, Moroni is the capital of Comoros, and Libreville is the capital of Gabon (note: option C spells it 'Librevile' incorrectly).