Question detail
Which of the following statements is true about alkenes?
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. Alkenes are less reactive than alkanes.
- B. Alkenes contain only single bonds.
- C. Alkenes can be produced from cracking.
- D. Alkenes are saturated hydrocarbons.
Answer
The correct option is Alkenes can be produced from cracking..
Explanation
The correct option is Alkenes can be produced from cracking.. Alkenes can be produced from cracking. is correct because it directly supports the approved learning objective to state that the products of cracking include alkanes and alkenes. This belongs to Cracking and alkenes 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
Confusing Products of Cracking
Students often state that the products of cracking are only alkenes, forgetting that alkanes are also produced.
Remember that cracking produces both alkanes and alkenes. Review the definitions and examples of each to reinforce this understanding.
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