The oxidation state of chromium in the final product formed by the reaction between Kl and acidified potassium dichromate solution is
+6
+4
+3
+2
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Resistance of 0.2 M solution of an electrolyte is 50 Ω. The specific conductance of the solution is 1.3 S m–1. If resistance of the 0.4 M solution of the same electrolyte is 260 Ω, its molar conductivity is