(A) $1$. Reaction of $1,2-\text{dibromopropane}$ with $Zn$ and $\Delta$ (dehalogenation) yields $C = \text{propene}$ $(CH_3-CH=CH_2)$.$2$. Reaction of

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(A) $1$. Reaction of $1,2-\text{dibromopropane}$ with $Zn$ and $\Delta$ (dehalogenation) yields $C = \text{propene}$ $(CH_3-CH=CH_2)$.$2$. Reaction of $1,2-\text{dibromopropane}$ with $(i)$ $\text{alc. } KOH$ and (ii) $NaNH_2$ (dehydrohalogenation) yields $A = \text{propyne}$ $(CH_3-C \equiv CH)$.$3$. Hydrogenation of $A$ $(\text{propyne})$ using $\text{Lindlar catalyst}$ yields $B = \text{propene}$ $(CH_3-CH=CH_2)$.$4$. Thus,$B$ is $\text{propene}$ and $C$ is $\text{propene}$.

Class 11 Chemistry Hydrocarbons Mix Examples-Hydrocarbon

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What are $B$ and $C$ respectively in the following set of reactions?
$C \xleftarrow[\Delta]{Zn} 1,2-\text{dibromopropane}$ $\xrightarrow[\text {(ii) } NaNH_2]{\text {(i) alc. } KOH} A$ $\xrightarrow[\text { Catalyst }]{\text { Lindlar }} B$

AP EAMCET 2025 All AP EAMCET

A
Propene,Propene
B
Propane,Propane
C
Propene,Propane
D
Propane,Propene

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$A$ molecule $P$ on treatment with acid undergoes rearrangement and gives $Q$. $Q$ on ozonolysis followed by reflux under alkaline condition gives $R$. The structure of $R$ is given below:
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Product of which of the following reactions is a racemic mixture?

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Methylcyclopentane $\xrightarrow{Br_2/hv} \mathop{Major}\limits_{(X)}$ $\xrightarrow[KOH/\Delta]{Alcoholic} \mathop{Major}\limits_{(Y)}$ $\xrightarrow[Peroxide]{HBr} \mathop{Major}\limits_{(Z)}$
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What are $B$ and $C$ respectively in the following set of reactions?$C \xleftarrow[\Delta]{Zn} 1,2-\text{dibromopropane}$ $\xrightarrow[\text {(ii) } NaNH_2]{\text {(i) alc. } KOH} A$ $\xrightarrow[\text { Catalyst }]{\text { Lindlar }} B$

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What are $B$ and $C$ respectively in the following set of reactions?
$C \xleftarrow[\Delta]{Zn} 1,2-\text{dibromopropane}$ $\xrightarrow[\text {(ii) } NaNH_2]{\text {(i) alc. } KOH} A$ $\xrightarrow[\text { Catalyst }]{\text { Lindlar }} B$

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[Image of $R$]
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Methylcyclopentane $\xrightarrow{Br_2/hv} \mathop{Major}\limits_{(X)}$ $\xrightarrow[KOH/\Delta]{Alcoholic} \mathop{Major}\limits_{(Y)}$ $\xrightarrow[Peroxide]{HBr} \mathop{Major}\limits_{(Z)}$
Major final product $(Z)$ is