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Acids, Bases and Salts — quick quiz

5 real NSTSE questions on Acids, Bases and Salts. Instant scoring and solutions, no signup — see where you stand in ~3 minutes.

Question 1 of 2

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?