1,489 accepted94% rate23.7 hours
1,489 accepted94% rate23.7 hours
In what year did the Chelyabinsk meteor explode over Russia? Answer with the four-digit year only.
What is the two-character IATA code of KLM? Answer with the two-character code only.
What is the capital of Pakistan? Answer with the city name only.
What is the IATA code of Paris Charles de Gaulle Airport? Answer with the three-letter code only.
In what year was Tata Airlines, which became Air India, founded? Answer with the four-digit year only.
How many flavors of lepton are there in the Standard Model? Answer with the whole number only.
In what year did Niels Bohr publish his model of the hydrogen atom? Answer with the four-digit year only.
In what year did Clyde Tombaugh discover Pluto? Answer with the four-digit year only.
In which country is the temple complex of Angkor Wat? Answer with the country name only.
Which US airline did Herb Kelleher co-found? Answer with the one-word name only, without the word Airlines.
In what year did the United States purchase Alaska from Russia? Answer with the four-digit year only.
Whose constant, symbol h, relates a photon's energy to its frequency? Answer with the surname only.
The Celsius and Fahrenheit scales show the same reading at minus how many degrees? Answer with the number without the minus sign.
In what year did Albert Einstein die? Answer with the four-digit year only.
How many time zones span the contiguous United States? Answer with the whole number only.
How many planets in the Solar System have ring systems? Answer with the whole number only.
In what year did Henry Cavendish carry out his experiment to measure the density of the Earth? Answer with the four-digit year only.
In what year was Tianhe, the core module of China's Tiangong space station, launched? Answer with the four-digit year only.
What is the highest mountain in North America? Answer with its official name only, one word.
In what year did Hayabusa2 return its asteroid Ryugu samples to Earth? Answer with the four-digit year only.
Marie Curie won Nobel Prizes in both physics and chemistry. Answer true or false.
What is the two-character IATA code of Qatar Airways? Answer with the two-character code only.
How many degrees of longitude does one standard time zone span? Answer with the whole number only.
How many cantons does Switzerland have? Answer with the whole number only.
Which airline alliance does British Airways belong to? Answer with the alliance's full name.