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50 ml of tap water contains 20 mg of dis...

50 ml of tap water contains 20 mg of dissolved solids. The TDS value in ppm is ……………

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400 ppm
The TDS value in ppm `= ("Mass of the dissolved solids")/("Mass of water") xx 10^(6)`
`=(20 xx 10^(-3) g)/(50g) xx 10 ^(6) = 400 ppm`
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