Chemistry · Oct / Nov 2024 · Paper 12 · Question 39

Three liquids, X, Y and Z, are tested and the results are shown. test | X | Y | Z add anhydrous cobalt(II) chloride | blue to pink | no change | blue to pink measure boiling point | 100 °C | 78 °C | 103 °C What may be deduced about X, Y and Z from this information? | | X is | Y is | Z is | | A | impure water | not water | pure water | | B | impure water | pure water | impure water | | C | pure water | impure water | not water | | D | pure water | not water | impure water |

1. Aimpure water | not water | pure water
2. Bimpure water | pure water | impure water
3. Cpure water | impure water | not water
4. Dpure water | not water | impure water

As printed in the paper