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Question

In which atmospheric layer the ozonosphere exists?

This question was previously asked in
CUET PG 2026 Agri-Business Management Question Paper (25-Mar-2026) (Shift 2)
The correct answer is
Stratosphere

Ozonosphere Layer Identification

The ozonosphere, often referred to as the ozone layer, is a region within Earth's atmosphere characterized by a high concentration of ozone (O3) relative to other atmospheric layers.

Atmospheric Layer Containing Ozonosphere

The ozonosphere is primarily located within the Stratosphere.

Reasoning

  • The stratosphere extends from the top of the troposphere (about 7-20 km altitude) up to about 50 km.
  • Within this layer, ozone molecules (O3) are formed and broken down, largely due to ultraviolet (UV) radiation from the sun.
  • This ozone concentration absorbs the majority of the sun's harmful UV-B and UV-C radiation, playing a crucial role in protecting life on Earth.
  • While ozone is present in other layers, its highest concentration is found in the lower portion of the stratosphere, defining the ozonosphere.
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