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True-or-false quiz for adults: a full roundup from common-sense questions to surprising trivia!

Did you know that hidden within the things we take for granted in our daily lives—things we casually use without a second thought—are actually some astonishing facts? From the unit used for a computer mouse, to the origin of SOS, to the history behind the tally mark “正” used for counting, everyday items are full of surprising truths.

We’ll introduce adult-friendly life trivia lurking in the everyday, presented in a true-or-false quiz format.

We’ve gathered questions that will make you think, “Wait, really?” as well as trivia you’ll be proud to brag about.

So, how many can you get right?

Food and Cooking Trivia Quiz (11–20)

Omurice is a dish that was born in Europe.

Omurice is a dish that was born in Europe.
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Although omurice is a Western-style dish, it actually originated in Japan. There are various theories about the restaurant where it was created, with Tokyo and Osaka often cited. The name “omurice” combines the French word “omelette” with “rice.”

In beef stroganoff, ‘Stroganoff’ is a proper name.

In beef stroganoff, 'Stroganoff' is a proper name.
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The “Stroganoff” in beef Stroganoff, a traditional Russian dish of stewed beef and onions, was named after Count Stroganov, a Russian nobleman. There are various theories about why it was given this name, such as that it originated in the count’s household or was passed down within the count’s family.

The beverage known as a ‘drinkable IV drip’ is soy milk.

The beverage known as a 'drinkable IV drip' is soy milk.
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It’s not soy milk but amazake that is called a “drinkable IV.” Thanks to its high nutritional value, amazake has long been enjoyed as a health beverage, containing a well-balanced mix of glucose, vitamins, amino acids, and other components essential to the human body. Because its nutrients resemble those found in an intravenous drip, it came to be known as a “drinkable IV.”

Pungency is not a taste.

Pungency is not a taste.
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What we tend to think of as the taste of spiciness is actually classified as a form of pain. It’s perceived when nerves in the tongue and mouth are stimulated by compounds such as capsaicin in chili peppers or the constituents of wasabi. Because of this, it’s a sensation different from taste, and it tends to vary more from person to person.

Pizza-man was born in Italy.

Pizza-man was born in Italy.
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Pizza-man isn’t something that originated in Italy; it’s a type of Chinese-style steamed bun that was created in Japan. Imuraya released a “pizza meat bun” in 1979, and it spread through the convenience store industry in the 1980s. The name likely comes from the use of pizza ingredients—such as cheese and tomato sauce—as the filling of the steamed bun. Because pizza is so strongly associated with Italy, it’s sometimes misunderstood, but it’s actually a uniquely Japanese food.

In conclusion

By learning the truths behind the words and objects we casually use through everyday life trivia, the familiar scenery of daily life starts to look a little different.

From the ingredients in cosmetics and the grooves in toothpicks to the potted plants in banks, the answers to true-or-false quizzes—made for adults to enjoy—hide discoveries you’ll want to share with others.

Cherish the small questions that arise in your daily life, and open the door to new knowledge.