Occurrence and Extraction — Predicted 2026

AI-Predicted Question Angles for UPSC 2026

Based on trend analysis, current affairs, and recurring themes in Occurrence and Extraction.

Comparative Analysis of Extraction Methods

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NEET often tests comparative knowledge. A question could ask to compare the extraction of magnesium by Dow's process (electrolysis) versus the Pidgeon process (thermal reduction), highlighting the conditions, advantages, or disadvantages of each. For example, 'Which process is more energy-intensive?' or 'What is the key difference in the reducing agent used?'. This requires understanding both methods in detail, not just individually.

Role of Additives in Electrolysis

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In the electrolysis of molten chlorides, various substances are added to lower the melting point or improve conductivity (e.g., $NaCl$ and $CaCl_2$ in $MgCl_2$ electrolysis, $CaF_2$ in $CaCl_2$ electrolysis). A question could specifically ask about the role of these additives, testing a deeper understanding of the practical aspects of industrial extraction. For instance, 'What is the purpose of adding $CaF_2$ during the electrolysis of molten $CaCl_2$?'

Stoichiometry in Extraction Steps

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While less common for this specific topic, NEET can introduce simple stoichiometric calculations. A question might involve calculating the amount of slaked lime required to precipitate magnesium from a given volume of seawater, or the amount of $MgCl_2$ needed to produce a certain mass of magnesium metal. This would combine knowledge of Dow's process with basic mole concept calculations, making it a slightly harder, integrated question.