Acidified chromic acid `+H_(2)O_(2)rarr underset(("blue colour"))(X+Y)`, X and Y are

The reaction between acidified chromic acid solution and H_(2)O_(2) gives a blue colouration due to the formation of -

In the reaction, Ca_(3)P_(2)+H_(2)O rarr (X) +(Y) the products (X) and (Y) are

Colemanite + Na_(2)CO_(3)overset(" Fused ")rarr (A)+(B)+CO_(2) underset("solution)((A))+CO_(2)rarr (B)+Na_(2)CO_(3) (B)+conc.HCl rarr NaCl+underset("Acid")((C )) underset("Acid")((C ))+H_(2)O rarr underset("Acid")((D)) (D)overset(" strong heating ")rarr (E ) (E )+CuSO_(4)overset(" Heated ")underset(" in flame ")rarr underset("Blue coloured compound")((F)) Compound (B) is