Bhutan General Knowledge (Trivia) Questions

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1.
What is the official language of Bhutan?
2.
What is the official currency of Bhutan?
3.
Which nation is associated with the "House of Wangchuk"?
4.
Which country's head of the state is known as "Dragon King"?
5.
Which country's government guiding philosophy is "Gross National Happiness"?