#1. When copper II sulphate solution is electrolyzed using platinum electrodes
#2. An oxide of metal Z reacts with magnesium when heated but it does not react with copper. The order of reactivity starting with the most reactive is
#3. The reaction between dilute hydrochloric acid and magnesium ribbon is fast at the beginning and gradually slows down thereafter. This is observed gradual decrease in the rate of reaction is due to.
#4. Which of the following compounds is used in the purification of water?
#5. Which one of the following reactions does not normally require a catalyst?
#6. Which of the following conditions does not affect the rate of reaction between lumps of calcium carbonate and dilute hydrochloric acid?
#7. When water is added to quick lime
#8. Which one of the following methods is normally used to prepare hydrogen in the laboratory?
#9. Hot excess conc sulphuric acid reacts with ethanol to give a gas which decolorizes bromine water. The gas is
#10. Which one of the following metals can burn in both oxygen and carbon dioxide?
#11. Which one of the following is an electronic is an electronic configuration of an atom of an inert gas?
#12. Which of the following mixtures is best separated by chromatography?
#13. Which of the following substances can be displaced by chlorine in a chemical reaction?
#14. Which one of the following substances has a giant atomic structure?
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