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Chemical Reactions of Organic Compounds
Chemistry · Kerala SSLC (Class 10) · English Medium · 33 questions and answers
Sample questions
- Q: What is a substitution reaction?
- A: A reaction in which one atom or group in a molecule is replaced by another atom or group. It is characteristic of saturated compounds (alkanes).
- Q: Write the substitution reaction of methane with chlorine in sunlight.
- A: CH₄ + Cl₂ → CH₃Cl + HCl (in the presence of sunlight). Chloromethane and hydrogen chloride are formed.
- Q: Why do alkanes mainly undergo substitution reactions?
- A: Because alkanes are saturated (only single bonds) and fairly unreactive, so their hydrogen atoms are replaced rather than atoms added across a bond.
- Q: What is an addition reaction?
- A: A reaction in which atoms or groups are added across a carbon–carbon double or triple bond, converting an unsaturated compound to a more saturated one.
- Q: What is hydrogenation? Give an example.
- A: The addition of hydrogen across a multiple bond in the presence of a catalyst (Ni). Example: C₂H₄ + H₂ → C₂H₆ (ethene to ethane).
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