General Knowledge

The official language of the Association of Southeast Asian Nations (ASEAN) is English only. Therefore, the correct answer is 'One'.

Ulaanbaatar is the capital and largest city of Mongolia, making it the correct answer. The other options are capitals or cities of different countries or are incorrect.

The United Nations University is headquartered in Japan, specifically in Tokyo. Therefore, Japan is the correct answer.

Honshu is the largest and most populous island of Japan, making Japan the correct answer for the location of Honshu. It is not located in South Korea, North Korea, or China.

Historical records show that several inventions caused deaths during their testing phases. The parachute did cause fatalities, notably Franz Reichelt who died testing his parachute from the Eiffel Tower in 1912. However, the Aerowagon, an experimental Soviet high-speed railcar powered by an aircraft engine and propeller, derailed fatally in 1921 killing seven people including its inventor. Other inventions like Henri Thuile's high-speed steam locomotive also caused deaths during testing. The railway, represented here by the Aerowagon, caused multiple deaths during testing, making it the invention with the most deaths during its testing phase among the options. Dynamite and motor cars were dangerous but not specifically noted for many deaths during testing phases. Therefore, the correct answer is D (Railway).

The longest land border in the world is between the United States and Canada, stretching over 8,800 kilometers. This makes option D the correct answer.

The Wangchu River, also known as the Thimphu River, flows in Bhutan. It is a significant river in the country, making Bhutan the correct answer.

The Pena Palace is a famous Romanticist castle located in Sintra, Portugal, and is recognized as a UNESCO World Heritage Site. Therefore, option B (Portugal) is the correct answer.

Syed Ameer Ali is the author of the famous book "The Spirit of Islam," which discusses Islamic culture and philosophy. The other options are notable figures but did not write this book.

26th January is celebrated as Republic Day in India to mark the date on which the Constitution of India came into effect in 1950, making India a sovereign republic.