Basic HTML Version

|  | Table of Contents |  | View Full Version

Page 63 - CT&AI_CLasa_7_Part_1
P. 63

    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

| 58 59 60 61 62 63 64 65 66 67 68 |