In which of the following entropy increases?

Options

A. Rusting of iron
B. Melting of ice
C. Crystallisation of sugar from solution
D. Vaporisation of camphor

Explanation

To determine in which of the following processes entropy increases, we will analyze each option step-by-step:

1. **Rusting of Iron**:
- Rusting is a spontaneous process that occurs naturally without any external intervention.
- In spontaneous processes, the entropy of the system tends to increase.
- Therefore, for the rusting of iron, entropy increases.

2. **Melting of Ice**:
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