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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${C_6}{H_6}(l)\, + \,\frac{{15}}{2}\,{O_2}(g)\, \to \,6\,C{O_2}(g)\, + \,3{H_2}O\,(g)$
Signs of $\Delta H,\,\Delta S$ and $\Delta G$ for the above reaction will be