Which one of the following is not a Green House Gas?

[amp_mcq option1=”Water vapours” option2=”Methane” option3=”Ozone” option4=”Carbon Monoxide” correct=”option4″]

This question was previously asked in

UPSC NDA-2 – 2015

Carbon Monoxide (CO) is not considered a primary greenhouse gas, unlike water vapour, methane, and ozone.

Greenhouse gases are atmospheric gases that absorb and emit infrared radiation, trapping heat in the atmosphere and contributing to the greenhouse effect. Common greenhouse gases include carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), water vapour (H2O), and ozone (O3). Carbon monoxide is a significant air pollutant and can have indirect effects on the climate by influencing the concentrations of some greenhouse gases, but it does not directly absorb infrared radiation in the same way as primary GHGs.

While CO is not a primary GHG, it plays a role in atmospheric chemistry, affecting the formation and destruction of other gases like methane and ozone, which are GHGs. However, in lists of direct GHGs, CO is typically excluded.

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