alleryStart learning →Crude stone tools called Oldowan tools are among the earliest inventions. Roughly how old are they?
AAbout 2.9 million years
BAbout 290,000 years
CAbout 29,000 years
DAbout 2,900 years
Answer & Solution
Correct answer: A. About 2.9 million years
Oldowan stone tools date back around 2.9 million years, long before modern humans.
Keep practising Invention
Browse all Invention questions for Olympiad (Class 5), or explore more General Knowledge topics.
Related questions
Which of these is among the earliest human inventions, dating back to early humans?Railroads, aviation, vaccination and the smartphone belong to which kind of invention?The word inventor comes from the Latin verb invenire. What does it mean?A patent is granted in India only. Where does it protect the inventor?A patent gives an inventor which right?In the twentieth century, which method largely replaced letterpress in commercial printingA hand press used a long handle to turn a threaded rod. Which two machines worked togetherIn an old printing shop, what did the compositor arrange into lines of text?