Question

Which of the following solutions will contain the highest concentration of H^+ ions?

Asked in RRB Group D · 2025
Acids · Chemistry
Exam PYQ4 Options
ChemistryAcids, Bases and SaltsAcidsRRB Group D2025
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Quick Revision

Acids turn blue litmus red; bases turn red litmus blue.

Correct AnswerCorrect option for this question
Option D — Solution with pH 3

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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.

High Exam Frequency
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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