UPSC Combined Geo-Scientist, Mains · 2023 · Mains Paper I
Q11(b). Radiocarbon age of a wood sample
Question
A piece of wood sample has a disintegration rate which is 20% of the disintegrations as shown by an equal weight of a new piece of wood. Find the age of the wood sample. [Given: t₁/₂ for ¹⁴C = 5740 years]
Model answer
The free solution for 2023 answers questions 1, 3, 4, 7, 8 and 10, the ones picked in its time plan. Question 11 is answered in full in the Geo-Scientist Chemistry Paper I, 2021 to 2025 book, with every part of every paper.
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UPSC Combined Geo-Scientist (Main) Chemistry Paper I: Model Answers 2021 to 2025
- All eleven questions of each paper, with the question printed above its answer
- Titration, gravimetric and nuclear numericals worked with units; structures drawn
- Topic-wise weightage and a topic-wise index
Coversradiocarbon datingcarbon-14age of wood samplehalf-lifedecay rate
All parts of Question 11
- 11(a) Packing fraction and binding energy of iron-5615 marks
- 11(b) Radiocarbon age of a wood sample10 marks
- 11(c) Balancing missing nuclear particles5 marks