pH, indicators, common salts, manufacturing of NaOH, bleaching powder.
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Q1 · Acids, Bases and Salts · EASY
A solution changes the color of red litmus to blue. What is the nature of this solution?
Q2 · Acids, Bases and Salts · MEDIUM
A student tested four solutions P, Q, R, and S with red and blue litmus papers. The results are shown below: P: Red litmus remains red, blue litmus turns red Q: Red litmus turns blue, blue litmus remains blue R: No change in either litmus S: Red litmus turns blue, blue litmus remains blue Which solution(s) is/are acidic?