What is the primary cause of ozone layer depletion?

Biology Mcqs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

PPSCFPSCNTSPakistan govt jobs
Subject
Biology Mcqsbiology-mcqs
Published
11 May 2018
Last updated
28 May 2026

Browse all Biology Mcqs

Choose the correct answer

Explanation

Ozone layer depletion is mainly caused by chlorofluorocarbons (CFCs), which break down ozone molecules in the stratosphere. Other factors like carbon dioxide, UV rays, and deforestation do not directly cause this depletion.

SolveExam — free MCQs and past papers for Pakistan government job tests. Content is for educational practice only.