Which reagent is useful for the conversion of cyclohexanol to chlorocyclohexane?

What is the decreasing order of dehydration of the following compounds in the presence of conc. $H_2SO_4$?

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 :

Which of the following is a tertiary allylic alcohol?

$A$ compound with the molecular formula ${C_4}{H_{10}}O$ reacts with sodium and gives a carbonyl compound upon oxidation,which does not reduce Tollen's reagent. What is the original compound?

Assertion : In fused state,calcium chloride cannot be used to dry alcohol or $NH_3$.
Reason : $CaCl_2$ is not a good dessicant.