NEET 2021 Model Test Paper 3
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Question : 86 of 180
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Which of the following is true for calcination of a metal ore ?
(i) It makes the ore more porous
(ii) The ore is heated to a temperature when fusion just begin
(iii) Hydrated salt lose their water of crystallization
(iv) Impurities of S, As and Sb are removed in the form of their volatile oxide
(i) It makes the ore more porous
(ii) The ore is heated to a temperature when fusion just begin
(iii) Hydrated salt lose their water of crystallization
(iv) Impurities of S, As and Sb are removed in the form of their volatile oxide
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