Browse Questions
Thermodynamics

# Which of the following is not spontaneous?

$\begin {array} {1 1} (A)\;\text{dissolution of copper sulphate in water}\\ (B)\;\text{reaction between hydrogen and oxygen to form water} \\ (C)\;\text{water flowing downhill}\\ (D)\;\text{flow of current from low potential to high potential} \end {array}$

Current always flows from high to low potential
Ans : (D)