MCQ
Which of the following is correct order for basic strength


- A$I > II > III$
- B$II > I > III$
- C$II > III > I$
- ✓$III > II > I$

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$C{H_3}CN\xrightarrow{{Na + {C_2}{H_5}OH}}X\xrightarrow{{HN{O_2}}}Y\mathop {\xrightarrow{{{K_2}C{r_2}{O_7}}}}\limits_{{H_2}S{O_4}} Z$
(At nos. : $L a=57, C e=58, E u=63$ and $Y b=70$ )
$X\xrightarrow{{{\text{Bromination}}}}Y\xrightarrow{{NaN{O_2} + HCl}}Z\mathop {\xrightarrow{{{\text{Boiling}}}}}\limits_{{C_2}{H_5}OH} {\text{Tribromobenzene}}$

(Rounded off to the nearest integer) [Assume : $\ln 10=2.303, \ln 2=0.693$ ]