State PCS PYQPrelims 2018

UPPCS · Question 52

The maximum concentration of Ozone is found in which of the following?

  1. Troposphere
  2. Mesosphere
  3. Stratosphere
  4. Exosphere
Show answer & explanation

Answer: (C) Stratosphere

Explanation

About 90% of atmospheric ozone lies in the stratosphere (ozone layer, roughly 15–35 km), which absorbs harmful UV-B radiation.