Page 63 - CT&AI_CLasa_7_Part_1

A group of students conducted an experiment to identify three unknown
solutions P, Q, and R using different indicators. Their observations were:
• P: Blue litmus turned red; red rose extract turned pink; turmeric showed no
change
• Q: Red litmus turned blue; turmeric turned red; onion smell disappeared
• R: No change with red or blue litmus; no change with turmeric; onion smell
remained
The students concluded the nature of each substance based on the results.
If turmeric alone was used, which substance or substances could not be correctly
identified?
(a) Only P (b) Only Q

(c) Both P and R (d) Both P and Q

Exploring Substances: Acidic, Basic, and Neutral 61