MCQ
Which of the following is most basic in nature
- A$Eu(OH)_3$
- B$Lu(OH)_3$
- ✓$Pr (OH)_3$
- D$Pm(OH)_3$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$R - Br + C{l^ - }\xrightarrow{{DMF}}R - Cl + B{r^ - }$ ,
which one of the following undergoes complete inversion of configuration?

$(A)\,\xrightarrow[{excess}]{{Me\, - \,I}}\,(C)\,\xrightarrow[{(ii)\,\,{H^ + }}]{{(i)\,\,NaN{H_2}}}(D)$