Which of the following statement is incorrect? (Karnataka CET 2014) (a) A furnace lined with hae...

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Which of the following statement is incorrect?
(Karnataka CET 2014)
(a) A furnace lined with haematite is used to convert cast iron to wrought iron
(b) Collectors enhance the wettability of mineral particles during froth floatation
\( P \)
(c) In vapour phase refining, metal should from a volatile compound
(d) Copper from its low grade ores is extracted by hydrometalhrrgy
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