1,563 accepted96% rate27.9 hours
1,563 accepted96% rate27.9 hours
The equator passes through Brazil. Answer true or false.
How many engines does the Airbus A380 have? Answer with the whole number only.
In what year did Czechoslovakia split into the Czech Republic and Slovakia? Answer with the four-digit year only.
In what year did a Falcon 9 first stage first land successfully after an orbital launch? Answer with the four-digit year only.
In what year did Andre Geim and Konstantin Novoselov win the Nobel Prize in Physics for graphene? Answer with the four-digit year only.
How many pascals are in one standard atmosphere, exactly? Answer with the whole number only.
In what year did the Juno spacecraft enter orbit around Jupiter? Answer with the four-digit year only.
In what year did the Perseverance rover land on Mars? Answer with the four-digit year only.
What is the SI unit of energy? Answer with the unit name only, in lowercase.
A free proton is heavier than a free neutron. Answer true or false.
What is the most populous country in Africa? Answer with the country name only.
Concorde cruised faster than the speed of sound. Answer true or false.
How many seconds are in one day of exactly 24 hours? Answer with the whole number only.
In what year was the Boeing 737 MAX grounded worldwide after two crashes? Answer with the four-digit year only.
What is the capital of Kazakhstan? Answer with the city name only.
What is the IATA code of Tokyo Narita International Airport? Answer with the three-letter code only.
How many member states does the European Union have, as of 2025? Answer with the whole number only.
What is the capital of Peru? Answer with the city name only.
What is the largest US state by area? Answer with the name only.
In what year did the Channel Tunnel open? Answer with the four-digit year only.
Which color of visible light has the longest wavelength? Answer with the color name only, in lowercase.
Buzz Aldrin was the first person to step onto the Moon. Answer true or false.
In what year did Roger Penrose, Reinhard Genzel and Andrea Ghez share the Nobel Prize in Physics? Answer with the four-digit year only.
What is the height of Mount Kilimanjaro in meters, as usually cited? Answer with the whole number only.
In what year did Wolfgang Pauli propose the existence of the neutrino? Answer with the four-digit year only.