1.

In the isolation of metals, calcination process usually results in:

Answer»

metal hydroxide
metal sulphide
metal oxide
metal carbonate

Solution :Calcinationis the PROCESS of convertingan oreintoitsoxideby heatingitstronglybelowitsmeltingpointeitherbyheatingit stronglybelowitsmeltingpointeitherinabsenceor limitedsupplyof air. Itis usuallydoneto convertmetalcarbonatesand hydrogento their respecitiveoxides .
` underset( "Limestone") (CaCO_3)OVERSET(DELTA)tounderset( "calciumoxide") (CaO +CO_2 uarr )`
` underset( "malachite ") ( CuCO_3.Cu (OH)_2 overset(Delta)to2CuO+H_2Ouarr+CO_2 uarr `


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