MCQ
NaHCO, formed by reaction of:
- ANaOH + H2CO3
- BNaCl + H2CO3
- CNa2CO3 + HCl
- DNaOH + Na2CO3
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
The correct observations are:
$2\text{KCIO}_3\xrightarrow{\text{Heat}}2\text{KCI}+3\text{O}_2$
$\text{MgO}+\text{H}_2\text{O}\rightarrow\text{Mg(OH)}_2$
$4\text{AI + 3O}_2\rightarrow\ 2\text{AI}_2\text{O}_3$
$\text{Zn + FeSO}_4\rightarrow\text{ZnSO}_4+\text{Fe}$