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How many seconds should chlorine remain on the table for effective sanitization?

  1. 5 seconds

  2. 7 seconds

  3. 10 seconds

  4. 15 seconds

The correct answer is: 7 seconds

Chlorine should remain on the table for at least 7 seconds for effective sanitization. This contact time is necessary to ensure that potentially harmful bacteria and contaminants are properly eliminated from the surface. Options A, C, and D do not provide the recommended contact time needed for chlorine to effectively sanitize the table.