InterviewSolution
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InterviewSolution
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A water sample has ppm level concentration of following anions `F^(-)=10 , SO_4^(2-)=100 , NO_3^(-)=50` The anion/anions that make/makes the water sample unsuitable for drinking is/areA. only `F^-`B. only `SO_4^(2-)`C. only `NO_3^-`D. both `SO_4^(2-)` and `NO_3^(-)` |
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Answer» Correct Answer - A Acceptable level of `F^-` is upto 1 ppm, `NO_3^-` is upto 50 ppm and `SO_4^(2-)` is upto 500 ppm `F^-` concentration in water sample is 10 ppm which is higher than the permissible level. Therefore, only `F^-` makes the water sample unsuitable for drinking |
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