Chemistry · May / June 2021 · Paper 11 · Question 24

Two incomplete statements about the preparation of an insoluble salt are given. ......1...... can be used to prepare insoluble salts, such as ......2...... . The salt is collected by ...... 3...... and it is then ......4...... . Which words correctly complete gaps 1–4?

1. Aprecipitation, barium nitrate, filtration, evaporated
2. Bprecipitation, lead sulfate, evaporation, washed and dried
3. Cprecipitation, lead sulfate, filtration, washed and dried
4. Dtitration, barium nitrate, evaporation, washed and dried

As printed in the paper