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Tanning: Quiz


Question 1: After the hair fibers were loosened, the tanners scraped them off with a ________.

Question 2: The isoelectric point of the ________ in the hide (this is a tissue strengthening protein unrelated to keratin) is also shifted to around 4.7 due to liming, which is an acidic type of tannage.
CollagenLysyl hydroxylaseCollagen, type II, alpha 1Collagen, type I, alpha 1

Question 3: Tanning is the process of making ________, which does not easily decompose, from the skins of animals, which do.
ButtonLeather skirtLeatherWool

Question 4: The primary barks used in modern times are ________, oak, tanoak, hemlock, quebracho, mangrove, wattle (acacia; see catechu), and myrobalan.
ChestnutPlantFlowering plantRice

Question 5: Often this uses tannin, an ________ chemical compound.
Acid dissociation constantAcidAcid–base reactionOxygen

Question 6: Tawing is a method that uses ________ and aluminum salts, generally in conjunction with other products such as egg yolk, flour, and other salts.

Question 7: This was done by either soaking the skin in urine, painting it with an alkaline lime mixture, or simply letting the skin putrefy for several months then dipping it in a ________ solution.
WaterSodium chlorideSaltHypertension

Question 8: Mineral tanning usually uses ________ in the form of basic chromium sulfate.

Question 9: The leather becomes tawed by soaking in a warm ________ alum and salts solution, between 20°C and 30°C.
RussiaPotassiumPotashUnited States

Question 10: Ancient civilizations used leather for waterskins, bags, harnesses, boats, ________, quivers, scabbards, boots and sandals.
ArmourCuirassMail (armour)Plate armour

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