In this question, we are asked to identify the statement that is NOT correct with regard to ozone.

Option 1 states that ozone is found mostly at 15-55 km in the atmosphere. This statement is correct. Ozone is primarily located in the stratosphere, which is the atmospheric layer between 10-50 km above the Earth`s surface.

Option 2 states that ozone is produced by gaseous chemical reactions. This statement is also correct. Ozone is formed through chemical reactions involving oxygen molecules and other gases, such as nitrogen oxides and volatile organic compounds.

Option 3 states that 16th November is celebrated as the International Day for the Preservation of the Ozone Layer. This statement is NOT correct. The International Day for the Preservation of the Ozone Layer is actually celebrated on September 16th.

Option 4 states that ozone is a form of oxygen in which three oxygen atoms are bonded together. This statement is also correct. Ozone (O3) is a molecule made up of three oxygen atoms bonded together.

Therefore, the correct answer is option 3 as it provides incorrect information about the International Day for the Preservation of the Ozone Layer.