The principal organic product formed in the following reaction is
$CH_2=CH(CH_2)_8COOH + HBr \xrightarrow{\text{peroxide}}$

The reaction of $HBr$ with the following compound would produce:

When neopentyl alcohol is heated with an acid,it slowly converts into an $85:15$ mixture of alkenes $A$ and $B$,respectively. What are these alkenes $?$ (Note: $A$ is the major product and $B$ is the minor product.)

$R_f$ value for $2$-methylpropene in a solvent system (Ethyl acetate + ether) is $0.42$. $2$-methylpropene is treated with dilute $H_2SO_4$ to give major organic product $(X)$. $R_f$ value for $(X)$ in the same solvent system under identical condition will be:

Which of the following alkenes on ozonolysis gives a mixture of ketones only?

What is the product formed when ethylene reacts with $1\%$ cold alkaline $KMnO_4$?