MCQ
Which of the following compound has maximum $"C - C" $ single bond length ?
- A$CH_2CHCCH$
- B$HCCCCH$
- ✓$CH_3CHCH_2$
- D$CH_2CHCHCH_2$

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$A + D \rightleftharpoons AD,AD + D \rightleftharpoons A{D_2}$, $A{D_2} + D \rightleftharpoons A{D_3}$. Then equilibrium constant $'K'$ for $A + 3D \rightleftharpoons A{D_3}$ is related as