General Principles and Processes of Isolation of Elements
Which compound is used to separate two metal sulphide in forth flotation process :
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Assertion :Al2O3 is converted into Al by reduction with carbon. Reason :Carbon (graphite) has greater affinity for oxygen than aluminium.
Fusion of MnO2, with KOH in presence of O2 produces a salt W. Alkaline solution of W upon electrolytic oxidation yields another salt X. The manganese containing ions present in W and X, respectively are Y and Z. Correct statement(s) is (are)
The main source of lead is PbS. It is converted to Pb by:-
Usually refractory metals are used in construction of furances because:
Which of the following gases is responsible for the flame at the mouth of Bessemer converter?
The reactions which does/do not occur in the reduction zone in the extraction of iron from haematite ore is
Carbon reduction process is not commercially applicable for which of the following set of oxides to extract the respective metal?
Which of the following is a physical mean for concentration of ore?