`VA` group precipitate was dissolved in `HNO_(3)` and treated with excess of `NCl_(5)`. It gives a white ppt. because of

Xg of Ag was dissolved in HNO_3 and the solution was treated with excess of NaCl when 2.87g of AgCl was precipitated. The value of X is

i) A black mineral (A) on treatment with dilute sodium cyanide of (B) and (C ). ii) The solution of (B) on reaction with zinc gives precipitate of a metal (D). iii) (D) is dissolved in dil. HNO_(3) and the resulting solution gives a white precipitate (E) with dil. HCl. iv) (E) on fusion with sodium carbonate gives (D). v) (E) dissolves in aqueous solution ammonia giveing a colourless solution (F). White ppt (E) is of

x g of Ag was dissolved in HNO_(3) and the solution was precipitated. The value of x is

When chloroform is treated with conc HNO_(3) it gives

When chloroform is treated with conc HNO_(3) it gives