What is obtained by the oxidation of ethyl alcohol with $K_2Cr_2O_7$?

Which among the following compounds reacts fastest with $HBr$?

Identify the alcohol that reacts immediately with Lucas reagent.

Which of the following orders is correct regarding the boiling point?

Which of the following compounds gives a yellow precipitate with $I_2$ and $NaOH$?

The reaction involved in the oil of wintergreen test is salicylic acid + reagent $\xrightarrow[Conc. H_{2}SO_{4}]{\Delta}$ product. The product is treated with $Na_{2}CO_{3}$ solution. The missing reagent in the above reaction is