Excess of which of the following in water cau | vedclass

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(B) The presence of excess nitrates $(NO_3^-)$ in drinking water is the primary cause of blue baby syndrome (methemoglobinemia).When ingested,nitrates

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$NO_3^-$

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(B) The presence of excess nitrates $(NO_3^-)$ in drinking water is the primary cause of blue baby syndrome (methemoglobinemia).When ingested,nitrates are converted into nitrites in the body.These nitrites react with hemoglobin to form methemoglobin,which is unable to transport oxygen efficiently.This leads to a lack of oxygen in the blood,causing the skin to appear blue,a condition known as blue baby syndrome.

List-$I$	List-$II$
$(A)$ Lead	$(I)$ $500 \text{ ppm}$
$(B)$ Sulphate	$(II)$ $50 \text{ ppm}$
$(C)$ Nitrate	$(III)$ $50 \text{ ppb}$

Excess of which of the following in water causes blue baby syndrome disease?

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Match the pollutant in List-$I$ with its maximum permissible limit in drinking water given in List-$II$.
List-$I$ List-$II$
$(A)$ Lead $(I)$ $500 \text{ ppm}$
$(B)$ Sulphate $(II)$ $50 \text{ ppm}$
$(C)$ Nitrate $(III)$ $50 \text{ ppb}$

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