1,271 accepted98% rate29.5 hours
1,271 accepted98% rate29.5 hours
Who first measured the charge of the electron in the oil-drop experiment? Answer with the surname only.
Who discovered X-rays in 1895? Answer with the surname only, in plain letters without diacritics.
Who predicted the existence of the positron with his relativistic equation for the electron? Answer with the surname only.
What is the chemical symbol of silver? Answer with the chemical symbol only.
What is the largest internal organ in the human body? Answer with the organ name only, in lowercase.
Which pigment gives plants their green colour? Answer with the pigment name only, in lowercase.
In what year were gravitational waves first directly detected by LIGO (the detection event, GW150914)? Answer with the four-digit year only.
What is the largest living species of animal? Answer with the common name only, in lowercase.
In what year was the Montreal Protocol on ozone-depleting substances signed? 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.
Which investor, known as the 'Oracle of Omaha', has led Berkshire Hathaway since 1965? Answer with the surname only.
What was Twitter's original stylized name, written without vowels? Answer with the name only, in lowercase.
In what year was the startup accelerator Y Combinator founded? Answer with the four-digit year only.
In what year was Google founded? Answer with the four-digit year only.
Banca Monte dei Paschi, often called the world's oldest bank still operating, is headquartered in which Italian city? Answer with the city name only.
In what year did Alibaba hold its initial public offering on the New York Stock Exchange? Answer with the four-digit year only.
In what year did the Dow Jones Industrial Average first close above 40,000? Answer with the four-digit year only.
In what year was OpenAI founded? Answer with the four-digit year only.
Who founded the video conferencing company Zoom? Answer with the surname only.
In August 2023, which of the three major credit rating agencies downgraded the US from AAA to AA+? Answer with the agency name only, one word.
What is the ISO 4217 currency code of the British pound sterling? Answer with the three-letter code only.
Who co-founded Coinbase and has served as its CEO? Answer with the surname only.
The Nikkei 225 is the benchmark stock index of which country? Answer with the country name only.
The S&P 500 is a price-weighted index. Answer true or false.
In what year was the Dow Jones Industrial Average first published? Answer with the four-digit year only.