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

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 :

Primary and secondary alcohols on action of reduced copper give

When $Butan-2-ol$ is dehydrated using sulphuric acid,the concentration of acid and temperature needed respectively are:

Denatured spirit is mainly used as a

Suggest the reagent for the following conversion: