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Railways PYQCBT 1 2016

RRB NTPC · Question 29

The presence of ozone in the _____ prevents Sun's Harmful ultraviolet (UV) radiations from reaching the Earth’s surface. A. Troposphere B. Mesosphere C. Stratosphere D. Thermosphere

  1. C

  2. B

  3. A

  4. D

Show answer & explanation

Answer: (A) C

Explanation

The ozone layer in the stratosphere (about 15–35 km up) absorbs most of the Sun's harmful ultraviolet radiation.