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Tannic acid is used in some traditional inks.
Hence the keyed answer is Tannic.
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Zinc hydroxide is Zn(OH)₂.
So the correct answer is Zn(OH)2.
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Serum is plasma without clotting proteins (fibrinogen, etc.).
So the correct answer is Clotting proteins.
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Pure water reaches maximum density near 4°C.
Hence the keyed answer is 4°C.
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Turpentine is distilled from pine resin.
So the correct answer is Pine tree.
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The tesla measures magnetic flux density / magnetic field strength (B).
So the correct answer is Magnetic Field Strength.
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