UPSC Combined Geo-Scientist, Mains · 2018 · Mains Paper III
Q3(b). Sample weight of pyrite for a BaSO₄ factor weight
Question
What weight of pyrite ore must be taken for analysis so that the BaSO₄ precipitate weight obtained will be equal to one-half that of the percent S in the sample?
Model answer
The free solution for 2018 answers questions 1, 4, 5, 6, 7 and 10, the ones picked in its time plan. This part is not answered on the site yet. New answers are announced on Telegram.
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Coversgravimetric factorfactor weightpyritebarium sulphate
All parts of Question 3
- 3(a) HCl and H₃PO₄ in a mixture by two end points10 marks
- 3(b) Sample weight of pyrite for a BaSO₄ factor weight10 marks
- 3(c)(i) Why the wash liquid is an electrolyte5 marks
- 3(c)(ii) Solubility of AgCl in 0.1 M NaNO₃5 marks