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Carbon and its Compounds
Science · CBSE Class 10 · English Medium · 20 questions and answers
Sample questions
- Q: Why does carbon form covalent bonds?
- A: Carbon has 4 valence electrons; it cannot easily lose or gain 4 electrons, so it shares electrons to complete its octet, forming covalent bonds.
- Q: What is catenation?
- A: The self-linking property of carbon atoms to form long chains, branched chains and rings.
- Q: What is tetravalency of carbon?
- A: Carbon has a valency of four, i.e. it can bond with four other atoms, allowing it to form many compounds.
- Q: What are hydrocarbons? Name their two types.
- A: Compounds made of only carbon and hydrogen. Two types: saturated (alkanes) and unsaturated (alkenes and alkynes).
- Q: What are saturated hydrocarbons?
- A: Hydrocarbons with only single bonds between carbon atoms, called alkanes; general formula CnH2n+2.
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