Hydrogen — Chemistry STD 11 Science — Question

$F - H - \frac{a}{{}} -  - {F^ - }$               $F - H - \frac{b}{{}} -  - F$

$O - H - \frac{c}{{}} -  - N$                     $O - H - \frac{d}{{}} -  - O$

A for precipitate formation reaction.

B for precipitate dissolution reaction.

C for precipitate exchange reaction.

D for no reaction.

${P_4} + NaOH \longrightarrow P{H_3} \uparrow  + Na{H_2}P{O_2}$

A for disproportionation reaction.

B for comproportionation reaction.

C for either intermolecular redox reaction or displacement reaction.

D for either thermal combination redox reaction or thermal decomposition redox reaction.

$MnO_4^ -  + {H^ + } + B{r^ - } \longrightarrow M{n^{2 + }}\left( {aq.} \right) + B{r_2} \uparrow $