Excess phosphorus was burnt in a gas jar and the residual gas passed successively over concentrated KOH solution and concentration H2SO4 before being collected in a flask. The gases collected are?
-
A.
carbon (IV) oxide, nitrogen and the rare gases -
B.
nitrogen and the rare gases -
C.
carbon (IV) oxide, nitrogen (IV) oxide and the rare gases -
D.
carbon (IV) oxide