In which of the following cases does entropy increase? 1) `C_2H_4`(g)+`H_2`(g)`to` `C_2H_6`(g) 2) `N_2O_4`(g)`to` `N_2O_4`(s) 3) Graphite `to` diamond 4) Combustion of glucose(s) at `110^(@)C`