$[CH_3-CH_2-CH(CH_3)-N^{+}(CH_3)_3]OH^{-} \xrightarrow{\text{pyrolysis}}$ major alkene will be

An alkene $(X)$ on ozonolysis followed by reduction gives the following products: $H-CHO$ ($2$ moles),$H-CO-CHO$,and $CH_3-CO-CO-CH_3$. The alkene $(X)$ is:

In which of the following,addition of $HBr$ does not take place against Markownikoff's rule,or for which is the Anti-Markownikoff addition of $HBr$ not observed?

The number of hydroxyl group$(s)$ in $Q$ is

$but-2-yne$ is reacted separately with one mole of $H_2$ as shown below:
$\underline{ B } \xleftarrow[\text{liq } NH_3]{Na} CH_3-C \equiv C-CH_3 \xrightarrow[\Delta]{Pd/C} \underline{ A }$
Identify the incorrect statements from the options given below:
$A.$ $A$ is more soluble than $B$.
$B.$ The boiling point and melting point of $A$ are higher and lower than $B$ respectively.
$C.$ $A$ is more polar than $B$ because dipole moment of $A$ is zero.
$D.$ $Br_2$ adds easily to $B$ than $A$.

Which of the following compounds gives $CH_3CHO$ and $CH_3CH_2CHO$ upon ozonolysis followed by hydrolysis?