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WikiCards · Card list · Science cards · Citric acid
Rare card · Science
Citric acid, a Rare card
Citric acid is an organic compound with the formula C6H8O7. It is a colorless weak organic acid.
- Rarity
- Rare
- Domain
- Science
- ATK
- 73
- DEF
- 87
- Power
- 160
- Wikipedia reads a year
- 290,000
Power 160 (ATK + DEF): stronger than 80 % of WikiCards cards.
Citric acid quiz: 3 questions
Three questions on the Citric acid card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
It ______ naturally in citrus fruits.
Answer
occurs. It occurs naturally in citrus fruits. From the Citric acid article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Riemann hypothesis. Riemann hypothesis 90 · Rugby league 81 · Kurt Gödel 78 · Citric acid 73 ATK in WikiCards.
Which of these Wikipedia articles is read the most in a year?
Answer
Riemann hypothesis. Riemann hypothesis 530,000 · Bell's palsy 420,000 · Citric acid 290,000 · Rugby league 230,000 Wikipedia reads over a year.
In a duel, each round asks a question like these about the opposing card, with 15 seconds to answer.
The facts on the card
The card carries these facts from its Wikipedia article.
- It occurs naturally in citrus fruits.
- In biochemistry, it is an intermediate in the citric acid cycle, which occurs in the metabolism of all aerobic organisms.
- More than two million tons of citric acid are manufactured every year.
Why it is Rare
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Citric acid article was read about 290,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 73 and blocks with 87: each hit it takes is cut by 35 %.
How to get Citric acid
Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.
More Science cards
Cards close in power
The cards just above and just below Citric acid in the power ranking, all domains together.
- SahelRare · Society · ATK 77 DEF 83
- BerkshireRare · Society · ATK 79 DEF 81
- TacoRare · Society · ATK 74 DEF 86
- Yellow RiverRare · Nature · ATK 84 DEF 76
- BluebeardRare · Arts · ATK 78 DEF 82
- MorusRare · Nature · ATK 75 DEF 85
Card lists
- Wikipedia quizNew questions every day
- All cards from A to ZEvery card, by name
- Science cards
- Legendary cards
- Tier listS and A tiers by power (ATK + DEF)
Credits
Text : Wikipedia, Citric acid (revision), CC BY-SA 4.0. Photo : Benjah-bmm27, Public domain, Wikimedia Commons.
