How many isomers of $C_5H_{11}OH$ will be primary alcohols?

$A$ hydroxy compound $(X)$ with molar mass $122 \ g \ mol^{-1}$ is acetylated with acetic anhydride, using a large excess of the reagent ensuring complete acetylation of all hydroxyl groups. The product obtained has a molar mass of $290 \ g \ mol^{-1}$. The number of hydroxyl groups present in compound $(X)$ is :

Which of the following reagents is used to convert ethyl alcohol into ethyl chloride?

Which of the following will have the highest viscosity?

Which of the following alcohols has the lowest boiling point?

Which of the following reacts with $HBr$ at a faster rate?