What is the correct order of structure of Atmosphere ? 

The Correct answer is Troposphere, Stratosphere, Mesosphere, Thermosphere, Exosphere.

Key Points

• The atmosphere is divided into five main layers based on temperature gradients.
• Troposphere is the lowest layer where weather phenomena occur. It extends up to about 8-15 km from the Earth's surface.
• Stratosphere lies above the Troposphere and extends up to about 50 km. It contains the ozone layer which absorbs and scatters ultraviolet solar radiation.
• Mesosphere is the third layer, extending from about 50 km to 85 km. This is the layer where most meteoroids burn up upon entering the Earth's atmosphere.
• Thermosphere extends from about 85 km to 600 km. It contains a small fraction of the atmosphere's mass and is where the auroras occur.
• Exosphere is the outermost layer, extending from about 600 km to 10,000 km. It is where the atmosphere thins out into space.