TS EAMCET 11-Sep-2020 Shift 2 Solved Paper

Buckminister fullerene is a type of fullerene with formula C60. It has a cage like fused sings that resembles a soccer ball.
Buckminister fullerene contain even number of carbon atoms with 12-(twelve) five membered rings and 20 six membered rings, i.e.
(X)=20⇒(Y)=12