General Awareness Questions

Q.  In which layer is the temperature the lowest?

a. Troposphere
b. Ionosphere
c. Mesosphere
d. Stratosphere


ANSWER: See Answer
 
The mesosphere lies above the stratosphere and extends to an altitude of about 85 km. This is layer is often referred to as the cold layer, as the lowest readings in the atmosphere are found here.

Temperature decreases with height, reaching a minimum average value of -90 ºC at the top of the layer.
 

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