Ozone depletion MCQ - Practice Questions with Answers

Methane, nitrous oxide and halons are all linked with stratospheric ozone loss, so the complete set is correct. Halons are bromine-containing ozone-depleting substances and are especially effective in destroying ozone. Nitrous oxide reaches the stratosphere and forms reactive nitrogen oxides that participate in ozone-depleting cycles. Methane affects stratospheric chemistry indirectly and is treated in this exam item as a contributing gas. A set that leaves out halons is incomplete, a set naming halons alone ignores the other listed contributors, and methane alone is also too narrow.