But$-2-$ol is:

An alcohol having molecular weight $74$ gives white turbidity with Lucas reagent within $5-10$ minutes. It reacts with sodium metal to give $Y$. $Y$ reacts with $CH_3-Br$ to give $Z$. $Z$ is:

Which of the following compounds is used as an antifreeze agent in automobile radiators?

Which of the following alcohols cannot be prepared by the reaction of an acid chloride with an excess of a Grignard reagent followed by acidification?

Conc. $H_2SO_4$ is heated with an excess of $C_2H_5OH$ at $140\,^{\circ}C$ to form:

The correct order of decreasing reactivity towards $H_3PO_4$ for the following compounds is: