Q1. [1] § 4.2.3 Will you be my Friend? § 4.2.4 Homologous Series § 4.2.5 Nomenclature of Carbon Compounds
A Hydrocarbon which does not belong to the same homologous series of carbon compounds is
- (A) C₄H₁₀
- (B) C₆H₁₄
- (C) C₇H₁₄
- (D) C₁₀H₂₂
Previously asked in CBSE board exam
2025 31/6/1 Q4
Generated by claude-sonnet-4-6 · 2026-06-15 06:49 · grounding rag
Model Answer
(C) C₇H₁₄
C₄H₁₀, C₆H₁₄, and C₁₀H₂₂ follow the alkane general formula CₙH₂ₙ₊₂, while C₇H₁₄ follows CₙH₂ₙ (alkene series), so it does not belong to the same homologous series.
Source: Chapter 4, Section 4.2.4 Homologous Series
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Explanation
- Alkanes follow CₙH₂ₙ₊₂: C₄H₁₀ (n=4: 2×4+2=10✓), C₆H₁₄ (n=6: 14✓), C₁₀H₂₂ (n=10: 22✓) — all alkanes.
- C₇H₁₄ fits CₙH₂ₙ (n=7: 2×7=14✓) — this is the alkene series, a different homologous series.
- In MCQs like this, quickly apply the general formula to each option to identify the odd one out.
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