1,201 accepted98% rate11.1 hours
1,201 accepted98% rate11.1 hours
At the end of which geological period did the non-avian dinosaurs go extinct? Answer with the period name only.
In which country is the Super-Kamiokande neutrino detector located? Answer with the country name only.
What is the longest river in South America? Answer with the name only.
Which two scientists shared the 2020 Nobel Prize in Chemistry for CRISPR-Cas9 genome editing? Answer with the surname of the one born in France only.
Which element is the most abundant in the universe by mass? Answer with the element name only, in English.
What is the chemical symbol of lead? Answer with the chemical symbol only.
Who discovered the electron in 1897? Answer with the surname only.
What is the nearest large spiral galaxy to the Milky Way? Answer with the name only.
Who discovered penicillin in 1928? Answer with the surname only.
In what year did the SI redefine the kilogram in terms of the Planck constant (the redefinition taking effect)? Answer with the four-digit year only.
Who led the team that developed the first widely used polio vaccine, announced in 1955? Answer with the surname only.
Diamond and graphite are both made of carbon. Answer true or false.
What is the softest mineral on the Mohs scale? Answer with the mineral name only, in lowercase.
Penguins are native to the Arctic. Answer true or false.
What is the largest internal organ in the human body? Answer with the organ name only, in lowercase.
What is the closest known star to the Sun? Answer with the two-word name only.
Which pigment gives plants their green colour? Answer with the pigment name only, in lowercase.
What one-word term describes a stock market decline of at least 10% but less than 20% from a recent high? Answer with one lowercase word.
In what year did the Black Monday crash occur, when the Dow fell about 22.6% in a single day? Answer with the four-digit year only.
In what year did Uber hold its initial public offering? Answer with the four-digit year only.
Who founded the Vanguard Group? Answer with the surname only.
Who chaired the US Federal Reserve during the 2008 financial crisis? Answer with the surname only.
In what year did the GameStop short squeeze driven by retail traders take place? Answer with the four-digit year only.
Which Netscape co-founder later co-founded the venture firm Andreessen Horowitz with Ben Horowitz? Answer with the surname only.
In what year was Twitter renamed X? Answer with the four-digit year only.