Question:

Among the following, the one that is not a green house gas is

Updated On: Apr 25, 2026
  • nitrous oxide
  • methane
  • ozone
  • sulphur dioxide
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The Correct Option is D

Solution and Explanation

The question asks us to identify which of the given gases is not a greenhouse gas. Let's examine each option:

  1. Nitrous Oxide (N2O): Nitrous oxide is indeed a greenhouse gas. It is well known for its capacity to trap heat in the atmosphere, contributing to the greenhouse effect.
  2. Methane (CH4): Methane is a significant greenhouse gas. It is much more effective than carbon dioxide at trapping heat in the atmosphere, although it exists in smaller quantities.
  3. Ozone (O3): Ozone is considered a greenhouse gas when located in the Earth's lower atmosphere (troposphere). It contributes to warming by absorbing heat.
  4. Sulphur Dioxide (SO2): Sulphur dioxide is not considered a greenhouse gas. Instead, it leads to cooling effects on the atmosphere by forming sulfate aerosols, which reflect sunlight away from the Earth.

From the above explanations, it is evident that sulphur dioxide is the only gas in the list that is not a greenhouse gas.

Hence, the correct answer is sulphur dioxide.

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