Insoluble Salts Quiz
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5 questions, one answer each
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1. What method is used to make an insoluble salt?
- A. Neutralisation with an acid
- B. Precipitation
- C. Evaporation
- D. Electrolysis
2. What is a precipitate?
- A. A soluble by-product
- B. The insoluble solid formed in the reaction
- C. The gas released
- D. The acid used
3. How is the precipitate separated from the reaction mixture?
- A. Distillation
- B. Chromatography
- C. Filtration
- D. Crystallisation
4. Why is the precipitate washed with distilled water?
- A. To dissolve it fully
- B. To remove soluble impurities
- C. To change its colour
- D. To increase its mass
5. Which application relies on precipitation reactions to remove unwanted ions?
- A. Fuel combustion
- B. Treating drinking water
- C. Electroplating
- D. Fractional distillation