In the structure of the dichromate ion, there is a :

Which one of the following compounds contains $$\beta$$-C₁-C₄ glycosidic linkage?

The major products A and B in the following set of reactions are :

Which one of the following lanthanides exhibits +2 oxidation state with diamagnetic nature? (Given Z for Nd = 60, Yb = 70, La = 57, Ce = 58)