In absorption of insolation, the most significant part is played by

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Q: 77 (CDS-II/2012)
In absorption of insolation, the most significant part is played by

question_subject: 

Science

question_exam: 

CDS-II

stats: 

0,19,26,24,19,1,1

keywords: 

{'absorption': [0, 0, 0, 2], 'ozone': [3, 0, 3, 5], 'carbon dioxide': [2, 0, 5, 6], 'insolation': [4, 0, 1, 4], 'haze': [0, 0, 1, 1], 'oxygen': [3, 0, 1, 0]}

In the absorption of insolation, which refers to the process of solar radiation being absorbed by the Earth`s atmosphere, the most significant role is played by ozone. Ozone is a molecule made up of three oxygen atoms (O3) and is located in the Earth`s stratosphere. It acts as a protective layer against harmful ultraviolet (UV) radiation from the Sun.

Ozone has the ability to absorb UV radiation, particularly in the UV-C and UV-B spectrums. This absorption prevents a substantial amount of UV radiation from reaching the Earth`s surface. UV-C radiation is entirely absorbed by the ozone layer, while a significant portion of UV-B radiation is also absorbed.

Although carbon dioxide does contribute to the greenhouse effect and has an impact on the Earth`s climate, it does not play the most significant part in the absorption of insolation. Similarly, oxygen and haze do not have a significant role in this process.

Therefore, the correct answer is option 2, ozone, as it plays the most significant part in the absorption of insolation.