MCQ
The best method to prepare cyclohexene from cyclohexanol is by using
- AConc. $HCl \,+$ $ZnCl_2$
- ✓Conc. $H_3PO_4$
- C$HBr$
- DConc. $HCl$

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$A$. Tollen's reagent $B$. Schiff's reagent $C$. $\mathrm{HCN}$ $D$. $\mathrm{NH}_2 \mathrm{OH}$ $E$. $\mathrm{NaHSO}_3$
Choose the correct options from the given below:
$pH$ values of $x$ and $y$ are respectively
Statement $(I)$ : The $\mathrm{NH}_2$ group in Aniline is ortho and para directing and a powerful activating group.
Statement $(II)$ : Aniline does not undergo FriedelCraft's reaction (alkylation and acylation).
In the light of the above statements, choose the most appropriate answer from the options given below :