$But-1-ene \xrightarrow[(ii) NaBH_4]{(i) (CH_3COO)_2Hg/H_2O} ?$
The product in the above reaction is:

$m$-chloroperbenzoic acid $(MCPBA)$ reacts with the given alkene. The product $(A)$ of the above reaction is:

Ozonolysis of $2-$methyl$-2-$butene,in presence of $Zn,$ yields $--$

Identify the correct stability order of the following alkenes:
$I) (CH_3)_2C=C(CH_3)_2$
$II) (CH_3)_2C=CH_2$
$III) (CH_3)_2C=CHCH_3$

The reaction of $1,3$-butadiene with $1$ equivalent of $HBr$ at different temperatures yields products $A$ and $B$. Identify the relationship between $A$ and $B$. The reaction scheme is as follows:
$CH_2=CH-CH=CH_2 + HBr (1 \text{ eq}) \xrightarrow{25^{\circ}C} A$
$CH_2=CH-CH=CH_2 + HBr (1 \text{ eq}) \xrightarrow{-80^{\circ}C} B$

On catalytic reduction $(H_2 / Pt)$,how many alkenes will give $n$-butane?