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Carbon and its Compounds — Science STD 10 — Question

Tamilnadu BoardEnglish MediumSTD 10ScienceCarbon and its Compounds4 Marks
Question
Discuss the characteristics of hydrocarbons.
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Answer

Characteristics of hydrocarbons:
  1. Lower hydrocarbons are gases at room temperature E.g. methane, ethane is gassed.
  2. They are colourless and odourless.
  3. The boiling point of hydrocarbons increases with an increase in the number of carbon atoms.
  4. They undergo combustion reaction with oxygen to form $CO _2$ and water.
  5. Alkanes are least reactive when compared to other classes of hydrocarbons.
  6. Alkynes are the most reactive due to the presence of the triple bond.
  7. Alkanes are saturated whereas alkenes and alkynes are unsaturated.
  8. They are insoluble in water.

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