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.
$A.$ $Sm ^{2+}$ $B.$ $Ce ^{2+}$ $C.$ $Ce ^{4+}$ $D.$ $Tb ^{4+}$
Choose the most appropriate answer from the options given below :
| सूची $I$ (यौगिक) | सूची $II$ ($Pk_a$ मान) |
| $A$.ethanol | $I$. $10.0$ |
| $B$. phenol | $II$. $15.9$ |
| $C$. $m$-nitrophenol | $III$. $7.1$ |
| $D$. $p$-nitrophenol | $IV$. $8.3$ |
Choose the correct answer from the options given below:
Assertion $A :$ Flourine forms one oxoacid.
Reason $R$ : Flourine has smallest size amongst all halogens and is highly electronegative
In the light of the above statements, choose the most appropriate answer from the options given below.
Ethanol $\xrightarrow{{PB{r_3}}}X\,\xrightarrow{{alc.\,KOH}}\,Y$$\,\xrightarrow[{(ii)\,{H_2}O\,,\,heat}]{{(i)\,{H_2}S{O_4},\,room\,\,temperature}}Z$
the product $Z$ is