Materials and Construction
Lead pipes are not safe for carraying drinking water, because water, containing dissolved oxygen attacks lead thereby forming poisonous Pb(OH)₂. Lead pipes are readily corroded by

None of these
v
Acetic acid
Dilute HC₁

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Materials and Construction
Lead is

Not resistant to corrosion
Not used as pigment (in its compound forms) for paints
Used as a cathodic material
Used as a shock absorber (in mattress form) between the foundation an steel framework of skyscrapper buildings

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