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Atmospheric composition

7 PYQ across 4 exams · 2018–2025 — the complete chronological timeline of how UPSC has tested this idea, oldest to newest.

CDS 2018 → GEO 2021 → CISF 2022 → CSE 2024
20181 PYQ
CDSQ41
Consider the following constituent gases of the atmosphere : 1. Argon 2. Neon 3. Helium 4. Carbon dioxide Which one of the following is the …
20211 PYQ
GEOQ29
Which one among the following has the highest concentration in the atmosphere?…
20222 PYQs
CISFQ59
The main constituents of atmospheric air are Oxygen (O₂) and Nitrogen (N₂). The composition of O₂ and N₂ is approximately :…
GEOQ69
The most significant 'variable gases' in the atmosphere are…
20241 PYQ
CSEQ12
With reference to "water vapour", which of the following statements is/are correct ? 1. It is a gas, the amount of which decreases with alti…
20252 PYQs
CISFQ4
Which of the following are the major constituents of dry air in the lower atmosphere ?…
GEOQ50
Among the following, which one is the least in percentage by volume in the atmosphere?…
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