1. Which alcohol is produced during fermentation?
2. What is the name of the process that produces ethanol from glucose?
3. Which organism carries out fermentation?
4. The two products of fermentation are the alcohol and the gas which can be test form using a limewater solution.
5. What enzymes is produced during fermentation to speed up the process?
6. Fermentation is a type of which respiration?
7. At what temperature does respiration occur most efficiently at?
8. Why must air be excluded during fermentation?
a) To stop the ethanol evaporating b) To increase the rate of yeast growth and reproduction c) To reduce yeast growth d) To prevent the oxidation of ethanol to ethanoic acid
9. What happens as the concentration of ethanol increases during fermentation?
a) The rate of fermentation increases b) The ethanol is oxidised c) The rate of production of carbon dioxide gas increases d) The yeast starts to die off
10. Which catalyst is used in the direct hydration of ethene?
a) Phosphoric acid b) Sulfuric acid c) Carbonic acid d) Chloric acid
11. What type of reaction is the direct hydration of ethene?
a) Reversible b) Irreversible c) Combustion d) Neutralisation
