Question detail
Which of the following statements is true about the first four alcohols?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Reactions of alkenes and alcohols (chemistry only)
Question
- A. They are all gases at room temperature.
- B. They have increasing boiling points with increasing carbon chain length.
- C. They do not dissolve in water.
- D. They contain carbon-carbon triple bonds.
Answer
The correct option is They have increasing boiling points with increasing carbon chain length..
Explanation
The correct option is They have increasing boiling points with increasing carbon chain length.. They have increasing boiling points with increasing carbon chain length. is correct because it directly supports the approved learning objective to describe what happens when any of the first four alcohols are added to water. This belongs to Alcohols within Reactions of alkenes and alcohols (chemistry only), 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 Alcohol-Water Reaction
Students often think that alcohols completely dissolve in water without any changes.
Explain that when alcohols are added to water, they form a homogeneous solution, but the alcohol molecules interact with water molecules through hydrogen bonding.
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