KEAM 2013 Physics and Chemistry Paper

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Question : 86 of 120

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The correct formula of borax is

Na2[B4O4(OH)3].9H2O
Na2[B4O5(OH)4].8H2O
Na2[B4O6(OH)5].7H2O
Na2[B4O7(OH)6].6H2O
Na2[B4O8(OH)7].5H2O

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