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1,061 accepted98% rate18.3 hours
Which element is the most abundant in Earth's crust by mass? Answer with the element name only, in English.
What is the exact speed of light in vacuum in metres per second, as defined in the SI? Answer with the whole number only.
In what year did the Svalbard Global Seed Vault open? Answer with the four-digit year only.
Which is the most active volcano in Hawaii, which erupted almost continuously from 1983 to 2018? Answer with the name only, in plain letters without diacritics.
What is the nearest large spiral galaxy to the Milky Way? Answer with the name only.
How many standard amino acids are encoded by the universal genetic code? Answer with the whole number only.
Which element has the highest electronegativity on the Pauling scale? Answer with the element name only, in English.
Sound travels faster in water than in air. Answer true or false.
Who discovered electromagnetic induction in 1831? Answer with the surname only.
Who was the first human in space? Answer with the surname only.
In which organelle does photosynthesis take place in plant cells? Answer with the organelle name only, singular, in lowercase.
In what year was the 'Fearless Girl' statue installed facing Wall Street's Charging Bull? Answer with the four-digit year only.
Which subreddit was at the center of the 2021 GameStop short squeeze? Answer with the subreddit name only, without the r/ prefix.
Who founded the Vanguard Group? Answer with the surname only.
Which WhatsApp co-founder was born in Ukraine? Answer with the surname only.
What was Twitter's original stylized name, written without vowels? Answer with the name only, in lowercase.
Under what pseudonym was the 2008 Bitcoin white paper published? Answer with the surname only.
The European Central Bank sets monetary policy for all countries that use the euro through the Eurosystem. Answer true or false.
In what year was the Shanghai Stock Exchange founded? Answer with the four-digit year only.
In what year was Google founded? Answer with the four-digit year only.
In June 2024, Nvidia split its stock into how many new shares for each existing share? Answer with the whole number only.
In 2022, Amazon split its stock into how many new shares for each existing share? Answer with the whole number only.
In which US state was the Bretton Woods Conference held? Answer with the state name only.
Lehman Brothers received a federal bailout in 2008 and avoided bankruptcy. Answer true or false.
In what year did Netscape hold its landmark initial public offering? Answer with the four-digit year only.