UPSC CAPF AC 2025 Paper 1 · Question 125

Question 125 of the UPSC CAPF (AC) 2025 Paper I (3 August 2025). Try it first, then open the answer and explanation.

1. CAPF 2025 · P-I · Q125 · Geography · Environment & Ecology

   Which one among the following is not a greenhouse gas?

   1. Sulphur dioxide
   2. Methane
   3. Nitrous oxide
   4. Fluorinated gas

   निम्नलिखित में से कौन-सी ग्रीनहाउस गैस नहीं है?

   1. सल्फर डाइऑक्साइड
   2. मीथेन
   3. नाइट्रस ऑक्साइड
   4. फ्लुओरीनेटेड गैस
   Show answer

   Answer: (1) Sulphur dioxide

   उत्तर: (1) सल्फर डाइऑक्साइड

   Sulphur dioxide is an air pollutant that causes acid rain and forms sulphate aerosols that reflect sunlight (a cooling effect); it is not counted as a greenhouse gas. Methane, nitrous oxide and fluorinated gases (HFCs, PFCs, SF6) are greenhouse gases covered by the Kyoto Protocol.

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