Difficult
Which of the following has the lowest barrier to rotation about the indicated bond?
- ACyclopentane (bond between $C_1$ and $C_2$)
- BButa$-1,3-$diene (bond between $C_2$ and $C_3$)
- Cn-Butane (bond between $C_2$ and $C_3$)
- D$2,3-$Dimethylbutane (bond between $C_2$ and $C_3$)
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Difficult
View SolutionAmong the following free radical bromination reactions,select those in which a $2^o$ halide is the major product. The reactions are as follows:
$(P)$ Cyclohexane + $Br_2/hv$
$(Q)$ Methylcyclobutane + $Br_2/hv$
$(R)$ Ethylbenzene + $Br_2/hv$
$(S)$ $3-$Methylhexane + $Br_2/hv$
$(T)$ Decalin + $Br_2/hv$
$(U)$ Butane + $Br_2/hv$
$(P)$ Cyclohexane + $Br_2/hv$
$(Q)$ Methylcyclobutane + $Br_2/hv$
$(R)$ Ethylbenzene + $Br_2/hv$
$(S)$ $3-$Methylhexane + $Br_2/hv$
$(T)$ Decalin + $Br_2/hv$
$(U)$ Butane + $Br_2/hv$
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