MCQ
Dobereiner traids is
- A$Na$, $K$, $Rb$
- B$Mg,$$S,$$As$
- ✓$Cl$, $Br,I$
- D$P,$$S,$, $As$

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

${C_6}{H_5}N{O_2}\xrightarrow{{Sn / HCl}}X\xrightarrow{{{C_6}{H_5}COCl}}Y + HCl$
What is $Y$ ?
$K_1 = 4.2 \times 10^{-7}$ and $K_2 = 4.8 \times 10^{-11}$
Select the correct statement for a saturated $0.034\, M$ solution of the carbonic acid.