What is the product formed in the given reaction?

The major product obtained in the following reaction is

Identify the products obtained in the ozonolysis of propene.

Which intermediate is formed during the addition of $HCl$ to propene in the presence of peroxide?

In hydroboration-oxidation reaction $:-$
$I$. Syn addition takes place
$II$. Reaction proceeds through the formation of a cyclic transition state
$III$. Vicinal diol is obtained as a product
$IV$. Anti-addition takes place and Anti-Markovnikov rule is followed
Which of the following statement$(s)$ is/are correct $:-$

The major product formed in the following reaction is :
$CH_3CH=CHCH(CH_3)_2 \xrightarrow{HBr}$