An iodized salt contains 0.5 $%$ of NaI. A person consumes 3 gm of salt every day. The number of iodide ions going into his body every day is

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Solution

The correct option is C
Moles of $I^{-}$ = moles of NaI = NaI
$\frac{Weight Nal}{Mol Nal of.Nal 100} = \frac{0.5 \times 3}{150} = \frac{1}{10^{- 4}} m o l e s$

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