Which of the following is NOT a green house gas?

This question was previously asked in
UPSSSC PET 24 Aug 2021 Shift 2 (Series A) (Official Paper)
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  1. Methane
  2. Nitrogen
  3. Carbon dioxide
  4. Chlorofluorocarbon (CFC)

Answer (Detailed Solution Below)

Option 2 : Nitrogen
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Recent UPSSSC Exam Pattern GK (General Knowledge) Mock Test
25 Qs. 25 Marks 15 Mins

Detailed Solution

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The correct answer is Nitrogen.

Key Points

  • The Primary greenhouse gases(GHGs)are:
    • Water Vapour
    • Carbon dioxide
    • Methane
    • Nitrous oxide
    • Ozone
  • Other GHGs are carbon monoxide, fluorinated gases, chlorofluorocarbons (CFCs), black carbon (soot), and brown carbon.
  • Among the greenhouse gases, only water vapor can absorb both incoming (UV) and outgoing (infrared) radiation.

Additional Information

  • The Greenhouse Effect is a natural phenomenon.
    • It has been happening on earth for millions of years.
    • The natural greenhouse effect happens due to water vapor and particles of water present in the atmosphere.
    • This phenomenon has enabled life to emerge on land from the oceans.
    • This is also the reason the earth has sustained life as it maintains an average temperature of 15 degrees celsius on earth.

Latest UPSSSC PET Updates

Last updated on Jul 15, 2025

-> The UPSSSC PET Exam Date 2025 has been released which will be conducted on September 6, 2025 and September 7, 2025 in 2 shifts.

-> The PET Eligibility is 10th Pass. Candidates who are 10th passed from a recognized board can apply for the vacancy.

->Candidates can refer UPSSSC PET Syllabus 2025 here to prepare thoroughly for the examination.

->Candidates who want to prepare well for the examination can solve PET Previous Year Paper.

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