Question detail
Why are alkanes the most common hydrocarbons found in crude oil?
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. They are the simplest hydrocarbons and form the bulk of the mixture.
- B. They are produced by the combustion of crude oil.
- C. They are the only hydrocarbons that can be distilled.
- D. They are the most reactive hydrocarbons.
Answer
The correct option is They are the simplest hydrocarbons and form the bulk of the mixture..
Explanation
The correct option is They are the simplest hydrocarbons and form the bulk of the mixture.. They are the simplest hydrocarbons and form the bulk of the mixture. 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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