What is obtained by the oxidation of isopropyl alcohol?

Which of the following is a secondary benzylic alcohol?

Which among the following compounds is a primary alcohol?

During the dehydration of alcohols to alkenes by heating with conc. $H_2SO_4$,the initiation step is:

What is the order of reactivity of halogen acids $(HX)$ with $C_2H_5OH$?

Write the main product of the given reactions:
$1$. $(CH_3)_2CHCHBrCH_3 \xrightarrow[ethanol]{KOH, \Delta }$
$2$. $(CH_3)_2CHCH(OH)CH_3 \xrightarrow{H_2SO_4, \Delta }$