Question detail
Which of the following properties of hydrocarbons decreases with increasing molecular size?
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. Flammability
- B. Viscosity
- C. Boiling point
- D. Melting point
Answer
Flammability
Explanation
As the size of hydrocarbon molecules increases, flammability tends to decrease because larger molecules are less volatile.
Common mistake
Misunderstanding Hydrocarbon Properties
Students often think that all hydrocarbons have the same boiling point, viscosity, and flammability regardless of their molecular size.
Emphasize that the properties of hydrocarbons, such as boiling point, viscosity, and flammability, change with the size of their molecules. Larger molecules generally have higher boiling points and viscosities.
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