The phase diagram of a pure substance is sketched below. 21. p3 t the number of degrees of freedom at points p1, p2 and p3, respectively, are (a) 2, 1,0 (b) 1,2

The phase diagram of a pure substance is sketched below. 21. P3 T The number of degrees of freedom at points P1, P2 and P3, respectively, are (a) 2, 1,0 (b) 1,2,0 (C)2,0,1 (d) 0,2,1 . option (a) 2,1,0 is correct