Question
Which process uses oil and water to separate valuable minerals from impurities during ore concentration?
Asked in RRB JE CBT 2 (CMA) · 2026
Metallurgy · Chemistry
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Metals higher in the reactivity series displace less reactive metals from their salts.
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Questions Asked from Periodic Trends: Electronegativity, Electron Affinity & Metallic Character in Previous Exams
See how often Periodic Trends: Electronegativity, Electron Affinity & Metallic Character has appeared in previous-year questions across major government exams.
4UPSC Questions Asked in These Years:2012, 2013, 2021, 2023
9SSC Questions Asked in These Years:2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
7Railways Questions Asked in These Years:2016, 2018, 2021, 2022, 2023, 2025, 2026
16State PSC Questions Asked in These Years:2002, 2004, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
Periodic Trends: Electronegativity, Electron Affinity & Metallic Character has appeared in 36 previous-year exam questions, most frequently in State PSC, SSC and Railways.
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