Question detail
Which of the following best explains the statement that most hydrocarbons in crude oil are alkanes?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Carbon compounds as fuels and feedstock
Question
- A. Alkanes are the only hydrocarbons that can be extracted from crude oil.
- B. Alkanes are the most stable and therefore accumulate in the oil.
- C. Alkanes are the only hydrocarbons that can be used as fuels.
- D. Alkanes are the only hydrocarbons that can be cracked.
Answer
The correct option is Alkanes are the most stable and therefore accumulate in the oil..
Explanation
The correct option is Alkanes are the most stable and therefore accumulate in the oil.. Alkanes are the most stable and therefore accumulate in the oil. is correct because it directly supports the approved learning objective to state that most hydrocarbons in crude oil are alkanes. This belongs to Crude oil, hydrocarbons and alkanes within Carbon compounds as fuels and feedstock, so the answer must use the correct organic chemistry context. The other options are incorrect when they confuse the organic family, formula type, reaction condition, product, or property being tested. Keep molecular formula, structural formula, displayed formula, and general formula distinct. Do not confuse alkanes with alkenes, saturated with unsaturated, cracking with combustion, polymers with monomers, or hydrocarbons with oxygen-containing alcohols and carboxylic acids. When formulae are used, preserve the stored notation exactly and explain the GCSE chemistry idea in words rather than using unsupported displayed-formula diagrams.
Common mistake
Misunderstanding Hydrocarbon Types
Students often confuse alkanes with other types of hydrocarbons, such as alkenes, thinking that all hydrocarbons are alkanes.
To fix this, students should remember that alkanes are saturated hydrocarbons with the general formula CnH2n+2, while alkenes are unsaturated with the general formula CnH2n.
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