UPSC Combined Geo-Scientist, Mains · 2025 · Mains Paper III
Q3(b). Two-line background correction in AAS
Question
What is a two line correction method in AAS measurement?
Model answer
The free solution for 2025 answers questions 1, 2, 4, 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
Coverstwo-line correctionbackground correctionspectral interferenceAAS
All parts of Question 3
- 3(a) Calcium in a phosphate medium by AAS; protective agents15 marks
- 3(b) Two-line background correction in AAS5 marks
- 3(c) Globar as an IR source; advantage over the Nernst glower10 marks