MCQ
Most acidic among given compound is
- A$Pr(OH)_3$
- B$Gd(OH)_3$
- C$Sm(OH)_3$
- ✓$Er(OH)_3$
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$B.$ $N , N$ -Dimethylaniline
$C.$ N-Methyl aniline
$D.$ Benzenamine
Choose the correct order of basic nature of the above amines.
$A$. The chromate ion is square planar.
$B$. Dichromates are generally prepared from chromates.
$C$. The green manganate ion is diamagnetic.
$D$. Dark green coloured $\mathrm{K}_2 \mathrm{MnO}_4$ disproportionates in a neutral or acidic medium to give permanganate.
$E$. With increasing oxidation number of transition metal, ionic character of the oxides decreases.
Choose the correct answer from the options given below:
(Where $Me$ is $- CH _{3}$ )