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UPSC Combined Geo-Scientist

Chemist

  • 3 descriptive papers
  • 200 marks each
  • 3 h per paper

Mains Paper I covers inorganic chemistry.

UPSC Combined Geo-Scientist, Mains · 2024 · Mains Paper I

Q6(b). Organic precipitating reagents

Question

Match the following: (i) Cupferron; (ii) Cupron; (iii) 1-Nitroso-2-naphthol; (iv) Dimethylglyoxime; (v) 8-Hydroxyquinoline with 1. Co²⁺; 2. Ni²⁺; 3. Al³⁺; 4. Cu²⁺; 5. Fe³⁺; 6. Pb²⁺; 7. Cr³⁺.

Answer in brief

(i) – 5; (ii) – 4; (iii) – 1; (iv) – 2; (v) – 3.

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Topic notes: gravimetric analysis, solubility product and organic precipitants, with every Civil Services, IFoS and Geo-Scientist PYQ →

Coversorganic precipitantscupferrondimethylglyoxime8-hydroxyquinoline oxine1-nitroso-2-naphtholcupron

All parts of Question 6