1,531 accepted98% rate23.1 hours
1,531 accepted98% rate23.1 hours
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.
In what year did Hayabusa2 return its asteroid Ryugu samples to Earth? Answer with the four-digit year only.
What is the highest mountain in North America? Answer with its official name only, one word.
What is the two-character IATA code of Qatar Airways? Answer with the two-character code only.
What is the two-character IATA code of China Eastern Airlines? Answer with the two-character code only.
How many cantons does Switzerland have? Answer with the whole number only.
How many degrees of longitude does one standard time zone span? Answer with the whole number only.
Which airline operates the largest fleet of Airbus A380s? Answer with the airline name only.
Mercury has at least one natural moon. Answer true or false.
Neil Armstrong was the commander of Apollo 11. Answer true or false.
In what year was Skylab launched? Answer with the four-digit year only.
In what year did the Airbus A380 enter commercial service? Answer with the four-digit year only.
In what year did Amelia Earhart disappear over the Pacific? Answer with the four-digit year only.
What is the name of China's space station? Answer with the one-word name only.
In what year did the Boeing 707 enter commercial service? Answer with the four-digit year only.
What is the SI unit of magnetic flux? Answer with the unit name only, in lowercase.
What is the capital of Ethiopia? Answer with the city name only.
In what year did the Philae lander touch down on a comet? Answer with the four-digit year only.
In what year did Erwin Schrodinger publish his wave equation? Answer with the four-digit year only.
How many regions does metropolitan France have? Answer with the whole number only.
In what year was Halley's Comet last at perihelion? Answer with the four-digit year only.
Istanbul is the capital of Turkey. Answer true or false.
In what year did Michael Faraday discover electromagnetic induction? Answer with the four-digit year only.
In what year did the Airbus A350 enter commercial service? Answer with the four-digit year only.