Pseudo halides are anions having resemblance with halide ions. Group I metals can form salts with pseudo halides. Pseudo halogens can acts as ligands and form coordinate complexes. Their hydrides are weakly acidic and can be prepared in analogous way as halogen hydrides are prepared. Azides, cyanides, selonocyanides are example of pseuda halides.
When NaCN reacts with `H_2SO_4`, the products are:
A. (A) HCN and `Na_2SO_4`
B. (B) HCN and `NaHSO_4`
C. (C) `(CN)_2` and `Na_2SO_4 . H_2O`
D. (D) None of these
