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How many neutrons are in the nucleus of uranium-238? Answer with the whole number only.
In what year did easyJet operate its first flight? Answer with the four-digit year only.
In what year did Czechoslovakia split into the Czech Republic and Slovakia? Answer with the four-digit year 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.
A free proton is heavier than a free neutron. Answer true or false.
How many pascals are in one standard atmosphere, exactly? Answer with the whole number only.
Which strait separates Asia from North America? Answer with the strait name only, without the word Strait.
Which airline alliance does Air France belong to? Answer with the alliance's full name.
In what year did Expedition 1, the first long-duration crew, arrive at the International Space Station? Answer with the four-digit year only.
What is the SI unit of energy? Answer with the unit name only, in lowercase.
What is the most populous country in Africa? Answer with the country name only.
In what year was graphene first isolated at the University of Manchester? Answer with the four-digit year only.
In what year was James Chadwick awarded the Nobel Prize in Physics? Answer with the four-digit year only.
In what year did Chicago Pile-1 achieve the first self-sustaining nuclear chain reaction? Answer with the four-digit year only.
How many seconds are in one day of exactly 24 hours? Answer with the whole number only.
What is the height of K2 in meters, as usually cited? 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 largest hot desert in the world? Answer with the desert name only, without the word Desert.
What is the capital of Kazakhstan? Answer with the city name only.
In what year was the SkyTeam airline alliance founded? Answer with the four-digit year only.
What is the IATA code of Tokyo Narita International Airport? Answer with the three-letter code only.
Concorde cruised faster than the speed of sound. Answer true or false.
What is the capital of Peru? Answer with the city name only.
In what year did the Apollo 1 cabin fire occur? Answer with the four-digit year only.