Given below is a reaction sequence: [Reaction Sequence Missing]. The compounds A and C are respectively:

Question

Accepted Answer

1. **Missing Data:** The question refers to a specific reaction sequence determining compounds A and C. The chemical equations, reagents, and starting materials are missing from the input text.
2. **Context (AIPMT 2011):** Based on the tags and standard AIPMT 2011 questions regarding hydrocarbon properties, such sequences often involve:
   - **Preparation of Alkenes/Alkynes:** Dehydrohalogenation of alkyl halides or dehydration of alcohols [NCERT 11th, Unit 9, Sec 9.3.4].
   - **Chemical Properties:** Addition reactions (Markovnikov/Anti-Markovnikov), Ozonolysis, or Oxidation [NCERT 11th, Unit 9, Sec 9.3.5].
   - **Example Concept:** A common sequence involves converting an acid to an alcohol ($LiAlH_4$), then to a halide ($PCl_5$), and finally to an alkene ($Alc. KOH$).
3. **Conclusion:** Without the specific reaction scheme, the chemical identity of A and C cannot be derived.

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