Q.

Which of the following is not correct            [2024]

1 G is zero for a reversible reaction.  
2 G is negative for a spontaneous reaction.  
3 G is positive for a spontaneous reaction.  
4 G is positive for a non-spontaneous reaction.  

Ans.

(3)           

                  G=0reaction at equilibrium

                  G>0non spontaneous reaction

                  G<0spontaneous reaction