How many of the following statement is/are ture for calcination of met – InterviewSolution

1.	How many of the following statement is/are ture for calcination of metal ore ?
Answer» (i) It MAKES the ore more POROUS (II) the opre heated to a tempature just its melting point hydrated oxides lose their WATER of crystlliation Impurities of S,As and Sb are ANSWER :2

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