Chemical formula for rust is

Options :
  1. Al2O3.2H2O
  2. Fe2O3.XH2O
  3. CuSO4.4H2O
  4. FeSO4.2H2O
Answer and Explanation :-

Answer: Option 2

Explanation:

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The church grew very lonely about him, and he began to feel like a child whose mother has forsaken it. Only he knew that to be left alone is not always to be forsaken.
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