- AAcetone
- ✓Diethyl ether
- C$P.V.C.$
- DBakelite
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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 :
Statement $I :$ Ethyl pent$-4-$yn$-$oate on reaction with $\mathrm{CH}_{3} \mathrm{MgBr}$ gives a $3^{\circ}$-alcohol.
Statement $II :$ In this reaction one mole of ethyl pent$-4-$yn$-$oate utilizes two moles of $\mathrm{CH}_{3} \mathrm{MgBr}$.
In the light of the above statements, choose the most appropriate answer from the options given below:
| Bromine | $Na$ metal | Chromic acid | Lucas reagent | |
| Compound $X$ | decolourises | bubbles | Orange to Green | No reaction |
| Compound $Y$ | No reaction | No reaction | No reaction | No reaction |
Compound $X$ and $Y$ respectively are
Correct order of $pK _{ a }$ value is: