Which one of the following statement is false? \( \mathrm{P} \) (1) During roasting moisture is ...

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Which one of the following statement is false?
\( \mathrm{P} \)
(1) During roasting moisture is removed from the
W
ore
(2) The ore becomes free from almost all organic impurities
(3) Calcination of ore is carried out in absence of any blast of air
(4) The concentrated zinc blende is subjected to calcination during its extraction by pyrometallurgy
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