'प्रकाश-रासायनिक तुल्यता का नियम केवल प्राथमिक प्रकाश-रासायनिक प्रक्रमों पर ही लागू होता है।' यह कथन किसके द्वारा दिया गया था?

Which process in the stratosphere involves high-energy UV-C rays splitting oxygen molecules into individual oxygen atoms to facilitate the formation of ozone?

Select the photochemical reaction that has a quantum yield equal to 2.

The UV irradiation of a solution of benzophenone in isopropanol predominantly yields which of the following products?