The treatment of galena with $\mathrm{HNO}_{3}$ produces a gas that is\

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Professor PC Thomas Classes · Answer

( $\mathrm{a}, \mathrm{d}$ ) : Galena is PbS.\ $3 \mathrm{PbS}_{(s)}+8 \mathrm{HNO}_{3(l)} ightarrow 3 \mathrm{~Pb}\left(\mathrm{NO}_{3}ight)_{2(s)}+3 \mathrm{~S}_{(s)}+2 \mathrm{NO}_{(g)}+4 \mathrm{H}_{2} \mathrm{O}_{(l)}$ ' NO ' is the gas that is produced during reaction which is colourless and paramagnetic due to the presence of an unpaired electron on ' N '. It is a neutral oxide. It has linear geometry.\