UPSC Combined Geo-Scientist, Mains · 2024 · Mains Paper III
Q3(c). Theoretical oxygen demand; air for burning producer gas
Question
What do you mean by theoretical oxygen demand (ThOD)? Determine the volume of the air needed for complete combustion of 1 m³ of producer gas having composition by volume H₂ = 30%, CO = 10%, CH₄ = 4%, N₂ = 56%.
Model answer
The free solution for 2024 answers questions 1, 4, 5, 6, 7 and 9, the ones picked in its time plan. Question 3 is answered in full in the Geo-Scientist Chemistry Paper III, 2021 to 2025 book, with every part of every paper.
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UPSC Combined Geo-Scientist (Main) Chemistry Paper III: Model Answers 2021 to 2025
- All ten questions of each paper, with the question printed above its answer
- Instruments drawn as labelled diagrams, numericals worked with units
- Topic-wise weightage and a topic-wise index
Coverstheoretical oxygen demandThODproducer gascombustion calculationair requirement
All parts of Question 3
- 3(a) Qualitative phase analysis by X-ray powder diffraction10 marks
- 3(b) Components of the ICP; the sampler–skimmer interface10 marks
- 3(c) Theoretical oxygen demand; air for burning producer gas10 marks