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779 accepted99% rate11.3 hours
What is the capital of Nigeria? Answer with the city name only.
How many sovereign countries are there in South America? Answer with the whole number only.
In what year was the kilogram redefined in terms of the Planck constant, taking effect on 20 May? Answer with the four-digit year only.
What is the capital of the US state of Pennsylvania? Answer with the city name only.
In what year was the Three Mile Island nuclear accident? Answer with the four-digit year only.
What is the largest moon in the Solar System? Answer with the name only.
What is the capital of Ghana? Answer with the city name only.
The Airbus A380 has two full-length passenger decks. Answer true or false.
In what year did Concorde enter commercial service? Answer with the four-digit year only.
In which country is the city of Timbuktu? Answer with the country name only.
What is the IATA code of Dubai International Airport? Answer with the three-letter code only.
In what year was Neptune discovered? Answer with the four-digit year only.
What is the SI base unit of thermodynamic temperature? Answer with the unit name only, in lowercase.
In what year did Isaac Newton publish Opticks? Answer with the four-digit year only.
How many territories does Canada have? Answer with the whole number only.
In which country is Machu Picchu? Answer with the country name only.
Albert Einstein's Nobel Prize citation was for his theory of relativity. Answer true or false.
In what year was Aeroflot founded? Answer with the four-digit year only.
What is the largest country in the world by area? Answer with the country name only.
How many astronauts flew on Apollo 11? Answer with the whole number only.
In what year was KLM founded? Answer with the four-digit year only.
In what year was CERN founded? Answer with the four-digit year only.
How many engines did the McDonnell Douglas DC-10 have? Answer with the whole number only.
What is the two-character IATA code of Etihad Airways? Answer with the two-character code only.
In what year did Apollo 13 suffer its oxygen tank explosion? Answer with the four-digit year only.