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

How many propenyl radicals are possible from propene?

Identify the relationship between $A$ and $B$ in the following reactions:
$CH_3-CH=CH_2 \xrightarrow[(2)H_2O_2, OH^-]{(1)BH_3-THF} A$
$CH_3-CH=CH_2 \xrightarrow[(2)NaBH_4]{(1)(AcO)_2Hg, H_2O} B$

An organic compound $'A'$ $(C_4H_8)$ on treatment with $KMnO_4 / H^{+}$ yields compound $'B'$ $(C_3H_6O)$. Compound $'A'$ also yields compound $'B'$ on ozonolysis. Compound $'A'$ is:

Consider the following reactions:
$X + HCl \xrightarrow{\text{Anhydrous } AlCl_3} C_2H_5Cl$ (Addition)
$Y \xrightarrow{\text{Anhydrous } ZnCl_2 / HCl} C_2H_5Cl$ (Substitution)
$Y$ can be converted to $X$ on heating with $...$ at $...$ temperature:

$Ph-CH=CH_2 \xrightarrow[HBr]{(PhCOO)_2} \text{Product}$
Consider the above reaction:
$A$. The reaction proceeds through a more stable radical intermediate.
$B$. The role of peroxide is to generate $\dot{H}$ (Hydrogen radical).
$C$. During this reaction, benzene is formed as a byproduct.
$D$. $1-\text{Bromo}-2-\text{phenylethane}$ is formed as the minor product.
$E$. The same reaction in the absence of peroxide proceeds via a carbocation intermediate.
Identify the correct statements. Choose the correct answer from the options given below: