WBCS.LIVE practice question

Which layer of the atmosphere is most effective at absorbing harmful Ultraviolet (UV) radiation from the sun?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. Troposphere
  2. Stratosphere
  3. Mesosphere
  4. Ionosphere

Correct answer and explanation

Correct answer: Stratosphere

Explanation: āœ… Correct Answer: B) Stratosphere šŸ“š Explanation: The stratosphere contains a high concentration of ozone ($O_3$) molecules, forming what is commonly known as the Ozone Layer. This layer absorbs the majority of the sun's high-frequency UV radiation, protecting living organisms from skin cancer and genetic damage. Human-made chemicals like CFCs were famously responsible for thinning this protective barrier in the late 20th century.