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Lead pipes are not suitable for drinking water because

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Lead pipes are not suitable for drinking water because

(a) lead forms basic lead carbonate

(b) lead reacts with water containing air to form Pb(OH)2

(c) a layer of lead dioxide is deposited over pipes

(d) lead reacts with air to form litharge

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Correct answer: (b) lead reacts with water containing air to form Pb(OH)2

Explanation:

2Pb + 2H2O + O2 → Pb(OH)2

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