The correct order of the rate of acid-mediated dehydration reaction of the following compounds is:

The substitution of the $-OH$ group of an alcohol or the $-COOH$ group of a carboxylic acid with a $-Cl$ atom is achieved by using which of the following?

Given below are two statements :
Statement $I$ :
In Lucas test,primary,secondary and tertiary alcohols are distinguished on the basis of their reactivity with conc. $HCl + ZnCl_{2}$,known as Lucas Reagent.
Statement $II$ :
Primary alcohols are most reactive and immediately produce turbidity at room temperature on reaction with Lucas Reagent.
In the light of the above statements,choose the most appropriate answer from the options given below :

But$-2-$ol is:

Which one of the following compounds gives a positive iodoform test?

Which of the following is called the Lucas reagent?