Consider the above chemical reaction. The total number of stereoisomers possible for product $'P'$ is $.....$

$1$-Methylcyclohexene reacts with $B_2H_6$. The product is then treated with $H_2O_2$ and $NaOH$. What will be the product of the reaction?

$A$ and $B$ respectively are:
$A \xrightarrow[(2) Zn-H_2O]{(1) O_3} \text{Ethane-}1,2\text{-dicarbaldehyde} + \text{Glyoxal}$
$B \xrightarrow[(2) Zn-H_2O]{(1) O_3} 5\text{-oxohexanal}$

Compound $(A)$ is formed by the reaction of cyclooctatetraene with $(3 \text{ mole})$ of $CH_2I_2$ in the presence of $Zn/Cu$. Identify compound $(A)$.

The reaction $CH_2 = CH - CH_3 + HBr \rightarrow CH_3CHBr - CH_3$ is

Which of the following alkenes,on reaction with dil. $H_2SO_4$,does not produce the following alcohol?