C6 Global challenges

Practice questions on Global challenges

• Crude oil contains many long-chain hydrocarbons that are in low demand. Explain why the oi… (4 marks, Explain)
• Phytomining and bacterial extraction are two methods used to obtain copper from low-grade … (4 marks, Explain)
• Describe how steam cracking is used to produce smaller, more useful molecules from crude o… (4 marks, Describe)
• Ethene is an alkene produced by the cracking of crude oil fractions. Ethene can be used as… (4 marks, Explain)
• Carboxylic acids are a homologous series of organic compounds. Explain the typical acidic … (4 marks, Explain)
• Explain why acid rain is a problem caused by burning fossil fuels, and describe one enviro… (4 marks, Explain)
• Describe how carbon dioxide emissions from human activity contribute to climate change, an… (4 marks, Describe)
• Explain why phytomining is considered a more sustainable method of metal extraction than t… (4 marks, Explain)
• Describe how crude oil forms and explain why it is described as a finite resource. (4 marks, Describe)
• Explain how the carbon cycle helps to maintain a balance of carbon dioxide in the atmosphe… (4 marks, Explain)
• Ethanol can be produced by the fermentation of glucose using yeast. Ethanol belongs to a h… (4 marks, Explain)
• Explain why cracking is an important industrial process for the petrochemical industry. (4 marks, Explain)
• Explain why alloys are often used in construction and engineering instead of pure metals. (4 marks, Explain)
• Explain why cracking is an important industrial process for the oil industry. (4 marks, Explain)
• The contact process is used industrially to manufacture sulfuric acid. Explain why the con… (4 marks, Explain)