Uranium was also used in photographic chemicals (especially uranium nitrate as a toner), in lamp filaments for stage lighting bulbs, to improve the appearance of dentures, and in the leather and wood industries for stains and dyes. Uranium salts are mordants of silk or wool. Uranyl acetate and uranyl formate are used as electron-dense "stains" in transmission electron microscopy, to increase the contrast of biological specimens in ultrathin sections and in negative staining of viruses, isolated cell organelles and macromolecules. COUNT 5
QSN1 What product of uranium was used as toner? ANS1 nitrate QSN2 Along with uranyl formate, what product of uranium is used in transmission electron microscopy? ANS2 Uranyl acetate QSN3 What light bulbs use lamp filaments containing uranium? ANS3 stage QSN4 Along with leather, what industry uses uranium in dyes and stains? ANS4 wood QSN5 In addition to wool, what is uranium salt a mordant of? ANS5 silk