1,450 accepted99% rate16.8 hours
1,450 accepted99% rate16.8 hours
Infrared light has a shorter wavelength than ultraviolet light. Answer true or false.
What is the longest river in Europe? Answer with the river name only, without the word River.
How many regions does Italy have? Answer with the whole number only.
How many kilometers long is each arm of a LIGO interferometer? Answer with the whole number only.
What is the two-character IATA code of Spirit Airlines? Answer with the two-character code only.
What is the capital of Turkey? Answer with the city name only.
What is the capital of Kenya? Answer with the city name only.
What is the four-letter acronym of India's national space agency? Answer with the acronym only.
In what year did Marie Curie win her Nobel Prize in Chemistry? Answer with the four-digit year only.
Which airport handled the most passengers in the world in 2024? Answer with the city name only.
What is the capital of the US state of Illinois? Answer with the city name only.
How many states does the United States have? Answer with the whole number only.
Ryanair is headquartered in Ireland. Answer true or false.
In what year did South Sudan become independent? Answer with the four-digit year only.
In what year did the Tenerife airport disaster, the deadliest accident in aviation history, occur? Answer with the four-digit year only.
In what year did Viking 1 land on Mars? Answer with the four-digit year only.
What was the name of the Soviet and Russian space station that was deorbited in 2001? Answer with the name only.
In what year was Cathay Pacific founded? Answer with the four-digit year only.
How many Apollo missions landed astronauts on the Moon? Answer with the whole number only.
In what year did Alitalia stop flying and hand over to ITA Airways? Answer with the four-digit year only.
Who discovered the neutron in 1932? Answer with the surname only.
How many constellations does the International Astronomical Union recognize? Answer with the whole number only.
How many autonomous communities does Spain have? Answer with the whole number only.
In what year did Charles Lindbergh fly solo nonstop from New York to Paris? Answer with the four-digit year only.
In what year did the Suez Canal open? Answer with the four-digit year only.