MCQ
Which reaction does not produce ammonia?
- A$NH_4I + KOH \to$
- B${N_2} + 3{H_2}\xrightarrow[{Fe/Mo}]{\Delta }$
- ✓${(N{H_4})_2}C{r_2}{O_7}\xrightarrow{\Delta }$
- D$Mg_3N_2 + HCl\, (aq) \to$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$2 \mathrm{H}_{2} \mathrm{O} \rightarrow \mathrm{O}_{2}+4 \mathrm{H}^{\oplus}+4 \mathrm{e}^{-} ; \mathrm{E}_{\mathrm{red}}^{0}=1.23 \mathrm{V}$
$(\mathrm{R}=8.314 \;\mathrm{J} \mathrm{mol}^{-1} \mathrm{K}^{-1} ; \text { Temperature }=298 \;\mathrm{K} ;$ oxygen under std. atm. pressure of $1 \;bar$)
$\left( X \right)\,\xrightarrow{\Delta }\,\left( Y \right)$ amphoteric $ + \left( R \right) \uparrow \, + \,\left( S \right) \uparrow $
$P$ and $X$ are respectively
$E _{ Zn ^{2}+\mid Zn }^{ o }=-0.76 V$
Identify the incorrect statement from the options below for the above cell 
