MCQ
The incorrect order is
- ✓$N > P > As$ : Strength of $\pi -$ bond with oxygen atom
- B$SiF_4 > SiCl_4 > SiBr_4 > Sil_4$ : Thermal stability
- C$H_2S > H_2Se > H_2 Te$ : Arrhenious acid character
- D$CaBr_2 > MgBr_2 > BeBr_2$ : Melting point
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Roasted gold ore $+CN^-+ H_2O \xrightarrow{{{O_2}}} [x] + OH^-;$ $[x] + Zn \rightarrow [y] + Au$
$[x]$ and $[y]$ are :
$[CH_3CH(CH_3)]_2 \,C(CH_2CH_3)C(CH_3) C(CH_2CH_3)_2$