A porcess is nonspontaneous at evey temperature if
(i) `Delta H gt 0, Delta S = 0`
(ii)`Delta H lt 0, Delta S gt 0`
(iii) `Delta H gt 0, Delta S lt 0`
(iv) `Delta H = 0, Delta S lt 0`

Delta S = Delta H//T holds good for

In which of the following cases,the reaction is spontaneous at all temperature [A] Delta H>0,Delta S>0 ; [B] Delta H 0 ; [C] Delta H>0,Delta S<0

In which case,a spontaneous reaction is impossible at any temperature [Delta H+ve,Delta S+ve] , [Delta H+ve,Delta S-ve] , [Delta H-ve,Delta S-ve] , [" in all cases "]

For the process H_(2)O(l)(" lbar ",373K)rarr H_(2)O(g) (l bar, 373K) the correct set of thermodynamic parameters is [" (A) "Delta G=0,Delta S=+ve] , [" (B) "Delta G=0,Delta S=-ve] [" (C )"Delta G=+ve,Delta S=0] , [" (D )"Delta G=-ve,Delta S=+ve]

For a cyclic process,the condition is (A) Delta U=0 only (B) Delta H=0 only (C) Delta U>0 and Delta H>0 (D) both Delta U=0 and Delta H=0