MCQ
Of the following, the most acidic is
- A$A{s_2}{O_3}$
- ✓${P_2}{O_3}$
- C$S{b_2}{O_3}$
- D$B{i_2}{O_3}$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$A_{(s)} + B^+ \to A^+ + B_{(s)} $; $\Delta H^o = -300\,kJ$ is $70\%$.
The standard electrode potential of cell is :- .................... $\mathrm{V}$

Reason : $Six F$ atoms in $SF_6$ prevent the attack of $H_2O$ on sulphur atom of $SF_6$.
${C_6}{H_5} - N{H_2}\xrightarrow[{HCl}]{{NaN{O_2}}}A\xrightarrow{{CuCN}}B\xrightarrow{{{H_2}/Ni}}C\xrightarrow{{HN{O_2}}}D$
product $(D)$ would be
Assertion : For hydrogenation reactions, the catalytic activity increases from Group $5$ to Group $11$ metals with maximum activity shown by Group $7-9$ elements.
Reason : The reactants are most strongly adsorbed on group $7-9 $ elements.