A concentration cell is a galvanic cell in which

A concentration cell is a galvanic cell in which
  1. decrease in free energy in a spontaneous chemical process appears as electrical energy
  2. decrease in free energy in a spontaneous physical process appears as electrical energy
  3. decrease in free energy in a spontaneous physical or chemical process appears as electrical energy
  4. a non-spontaneous physical or chemical process produces electrical energy.

Solution

In concentration cell the spontaneous process is physical in nature involving transfer of matter from higher concentration to lower concentration in indirect manner

Asked in: JEE-TOPICTESTS-CHEMISTRY

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