MCQ
Which one of the following process is non-spontaneous?
- ADissolution of CuSO4 in water
- BReaction of H2 and O2 to form water
- CWater flowing down hill
- DFlow of electric current from low potential to high potential
✓
Answer
- Flow of electric current from low potential to high potential
Explanation:
The physical or chemical processes which do not proceed by its own in a particular direction and requires outside help is called a non-spontaneous process. Therefore, flow of heat from a cold body to a hot body is a non-spontaneous process as it requires external work as per Clausius.
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