Identify the product formed in the above reaction:

The number of stereoisomers possible for a compound of the molecular formula $CH_3-CH=CH-CH(OH)-CH_3$ is:

The most stable canonical structure of the given molecule is:

$A$ pair of stereoisomers might be classified in various ways. Which of the following statements are true with respect to pairs of stereoisomers?
$a$. They might be configurational isomers
$b$. They might be diastereomers
$c$. They might be constitutional isomers
$d$. They might be tautomers
$e$. They might be conformational isomers
$f$. They might be enantiomers
$g$. They might be positional isomers

Which of the following molecules has a plane of symmetry?

The possible number of stereoisomers for $5-$phenylpent$-4-$en$-2-$ol is $.............$