LEAD :
Lead is the heaviest of the common metals. It is extracted from lead ore called galena, which is a sulphide of a lead. India is having very little lead ores. Lead has a blueish - grey color and dull, metallic lustre, but this is lost on exposure to the air, the surface becoming a dull grey.
Lead is very soft, malleable and ductile metal and can be rolled easily. It is resistant to corrosion and many acids have no chemical action on it. Because of this it is used for water - pipes, roof covering, the sheathing of electric cables and for construction material of chemical plants. The melting point of lead is 327*C.
ALLOY OF LEAD :
Lead Alloyed with tin forms solders and alloyed with other metals makes bearing white metals and type metal. Alloyed with small percentage of arsenic, lead is used to produce shots for munitions.
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