Metallurgy
Tested in 2 real MPSC questions across 1 year (2019–2019). See it in context on the interactive Concept Graph →
Years it was asked
What you need to know first
Ores and mineralsThermal decompositionExtraction of metalsComplex formation in chemistry
Real questions that test this
कल्सिनेशन प्रक्रियेतून ________ बाहर पडतो. During calcination process
1)फक्त कार्बनडायऑक्साईड बाहेर पडतो
2)फक्त हैड्रोजनमधून पाणी बाहेर पडते
3)(1) किंवा (2) हे धातूकां वर अवलंबुन असते✓ Correct
4)हायड्रोजन सल्फाईड बाहेर पडतो
During calcination, ores are heated strongly below their melting point in the absence of air. Depending on the ore type, it can release carbon dioxide (from carbonates) or water (from hydrated oxides).