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# Which of the following statements for sodium thiosulphate is not true?

$\begin{array}{1 1}\text{Sodium thiosulphate is used as an antichlor in the textile industry}\\\text{Sodium thiosulphate finds its uses in photography as a fixer}\\\text{Sodium thiosulphate acts as an oxidizing agent in its reaction with iodine}\\\text{The structure of }S_2O_3^{2-}\text{ is tetrahedral}\end{array}$

Answer : Sodium thiosulphate acts as an oxidizing agent in its reaction with iodine
$2S_2O_3^{2-}\rightarrow S_4O_6^{2-}+2e^-$
$I_2+2e^-\rightarrow 2I^-$