Answer : Option B) <span>The oxygen in the air forms ozone in presence of UV rays
Explanation : The other given options for the chemical change seems to be irrelevant as the option A which converts water into different forms can be called as physical change, option C only dust and soot particle are released in air where no new substance is formed And in option D sulfur dioxide is getting released into air which is also a form of a physical process.
So in option B we can see a new compound getting formed which is ozone in presence of UV rays hence it is a chemical change.</span>
A chemical change is a change in the chemical makeup of a substance and results in a new substance. Ice and water both have the same chemical makeup - ice is just a different state and has the same atoms but in an expanded form.