Question

What is the role of sulphuric acid in the anodising process of aluminium?

Asked in RRB Group D · 2025
Metallurgy · Chemistry
Exam PYQ4 Options
ChemistryMetalMetallurgyRRB Group D2025
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Quick Revision

A solution with pH below 7 is acidic at 25°C; pH above 7 is basic.

Correct AnswerCorrect option for this question
Option B — It acts as an electrolyte to help form a thicker oxide layer.

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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.

High Exam Frequency
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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