Which of the following statements is incorrect regarding electrochemistry? (a) It is the study of...

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Which of the following statements is incorrect regarding electrochemistry?
(a) It is the study of production of electricity from energy released during spontaneous chemical reactions.
(b) NaOH, Cl_2, alkali and alkaline earth metals are prepared by electrochemical methods.
(c) The demerit associated with electrochemical methods is that they are more polluting. Thus they are ecodestructive.
(d) Electrochemical reactions are more energy efficient and less polluting.

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