Question

1.CaC2(s)+H2O(l)=Ca(OH)2(s) + C2H2
2.CaCO3(s)= CaO(s)+CO2(g)
3. 2Fe(s)+3H2O(g)= Fe2O3(s)+ 3H2(g)
Work is done by the system in the cases of A.1,2
B.1,2,3
C.1 only
D.2 only

Answer 1

Answer:

d only is the answer wecan find it easily in ncert