When wine is put into air it become sour due to

Options :
  1. bacteria
  2. oxidation of C2H2OH in CH3COOH
  3. Virus
  4. Formic acid formation
Answer and Explanation :-

Answer: Option 2

Explanation:

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And if these mountains had eyes, they would wake to find two strangers in their fences, standing in admiration as a breathing red pours its tinge upon earth's shore. These mountains, which have seen untold sunrises, long to thunder praise but stand reverent, silent so that man's weak praise should be given God's attention.
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