Question
Which of the following correctly identifies an acid using litmus paper?
Asked in RRB JE CBT 2 (CMA) · 2026
Ionic Equilibrium · Chemistry
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Acids produce hydrogen ions in aqueous solution, while bases supply hydroxide ions or accept protons.
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Questions Asked from Bases, Alkalis & the pH Scale in Previous Exams
See how often Bases, Alkalis & the pH Scale has appeared in previous-year questions across major government exams.
11UPSC Questions Asked in These Years:2010, 2011, 2012, 2013, 2014, 2020, 2021, 2022, 2023, 2024, 2026
10SSC Questions Asked in These Years:2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
6Railways Questions Asked in These Years:2016, 2018, 2021, 2022, 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
Bases, Alkalis & the pH Scale has appeared in 43 previous-year exam questions, most frequently in State PSC, UPSC and SSC.
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