1. Multiple Choice Questions (MCQs)
What is the optimal temperature range for the fermentation of glucose to produce ethanol?
- a) 0-10°C
- b) 25-35°C
- c) 50-60°C
- d) 70-80°C
Which organism is used in the fermentation process to produce ethanol?
- a) Bacteria
- b) Yeast
- c) Algae
- d) Molds
What is the catalyst used in the catalytic hydration of ethene to ethanol?
- a) Sulfuric acid
- b) Hydrochloric acid
- c) Phosphoric acid
- d) Nitric acid
What is the primary by-product of ethanol fermentation?
- a) Methane
- b) Oxygen
- c) Carbon dioxide
- d) Water
Which of the following is a major advantage of using ethanol as a fuel?
- a) High cost
- b) Non-renewable
- c) Clean burning
- d) Low energy density
What is the chemical formula for ethanol?
- a) CHOH
- b) C2H6
- c) CHOH
- d) CHOH
Which process requires high pressure and temperature for ethanol production?
- a) Fermentation
- b) Catalytic hydration
- c) Distillation
- d) Sublimation
Ethanol combustion primarily produces:
- a) CO and H2O
- b) CO2 and H2
- c) CO2 and H2O
- d) CO and H2
What is the disadvantage of ethanol production through fermentation?
- a) High-temperature requirement
- b) Slow process
- c) High-pressure requirement
- d) Uses non-renewable resources
Which industry uses alcohol extensively as a solvent?
- a) Agriculture
- b) Pharmaceuticals
- c) Mining
- d) Construction
2. Short Answer Questions
i. What is the chemical equation for the fermentation of glucose to ethanol?
ii. Name two advantages of producing ethanol via fermentation.
iii. What catalyst is used in the catalytic hydration of ethene to ethanol?
iv. List two disadvantages of the catalytic hydration method for ethanol production.
v. What are the primary products of ethanol combustion?
vi. Why is ethanol considered a renewable fuel?
vii. How is ethanol used in the pharmaceutical industry?
viii. Describe one environmental benefit of using ethanol as a fuel.
ix. What role does yeast play in ethanol production?
x. Name two industries where alcohols are used as solvents.