Daily True or False
August 18, 2026
10 true or false questions from this day's daily challenge. Click each one to reveal the answer and explanation.
1.Stick insects can change the color of their body instantly like a chameleon.
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Medium
Stick insects can change the color of their body instantly like a chameleon.
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Stick insects can change color slowly over days or weeks due to humidity, temperature, or background, but not instantly. Their camouflage relies on static appearance, not rapid color change.
2.Leonardo da Vinci designed a mechanical knight that could sit, stand, and move its arms.
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Hard
Leonardo da Vinci designed a mechanical knight that could sit, stand, and move its arms.
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In his notebooks, Leonardo da Vinci designed a mechanical knight with gears and pulleys that could sit, stand, and move its arms. It is considered an early robot concept.
3.René Magritte began his career as a commercial artist designing wallpaper and advertising posters.
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Hard
René Magritte began his career as a commercial artist designing wallpaper and advertising posters.
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Magritte worked as a wallpaper designer and advertising poster artist before gaining fame as a surrealist painter.
4.Man Ray painted a mustache and beard on the Mona Lisa.
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Medium
Man Ray painted a mustache and beard on the Mona Lisa.
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That famous altered Mona Lisa, titled 'L.H.O.O.Q.', was created by Marcel Duchamp in 1919, not by Man Ray.
5.Gustave Courbet's painting 'The Stone Breakers' survived World War II and was later displayed at the Louvre.
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Medium
Gustave Courbet's painting 'The Stone Breakers' survived World War II and was later displayed at the Louvre.
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The painting was destroyed in the 1945 bombing of Dresden; it never entered the Louvre, and only photographs of it remain.
6.Utagawa Hiroshige worked as a fire warden before becoming a full-time artist.
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Medium
Utagawa Hiroshige worked as a fire warden before becoming a full-time artist.
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Hiroshige inherited the position of fire warden from his father and held it for many years before dedicating himself to art. He later passed the role to his son.
7.Walt Disney was a major investor in early television technology.
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Hard
Walt Disney was a major investor in early television technology.
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Walt Disney was a TV content producer, not an investor in television technology. He partnered with ABC to create shows like 'Disneyland' to fund his theme park, but did not invest in or develop TV hardware or infrastructure.
8.Wu Zetian was a devout Buddhist and promoted Buddhism over Confucianism.
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Medium
Wu Zetian was a devout Buddhist and promoted Buddhism over Confucianism.
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She used Buddhist prophecies to legitimize her rule and funded many temples, shifting state favor from Confucian scholars.
9.Elon Musk co-founded X.com, which merged with Confinity to become PayPal.
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Medium
Elon Musk co-founded X.com, which merged with Confinity to become PayPal.
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Musk founded X.com in 1999. In 2000, it merged with Confinity, which had a money-transfer service. The merged entity was later renamed PayPal, and eBay acquired it in 2002.
10.Alberto Giacometti was awarded a Nobel Prize for his contributions to art.
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Easy
Alberto Giacometti was awarded a Nobel Prize for his contributions to art.
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There is no Nobel Prize for art. Alberto Giacometti received other honors but never a Nobel—his fame rests on his sculptural achievements.
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