JEE CHEMISTRY MCQ: P-BLOCK ELEMENTS

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In the laboratory

{H_2}S

gas is prepared by using black lumps and dil.

{H_2}S{O_4}

The black lumps are

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Correct option: C

FeS

Option C (FeS) is correct because ferrous sulfide reacts with dilute sulfuric acid to produce hydrogen sulfide gas.

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17^{\text {th }}

{O}_2

{O}_2

\mathrm{C}{\mathrm{N}^ - }

{\mathrm{N}_2}

\mathrm{C}{\mathrm{N}^ - },\mathrm{\;}{\mathrm{N}_2}

2 {Fe}^{3+}+{SO}_2+2 {H}_2 {O} \rightarrow 2 {Fe}^{2+}+{SO}_4^{2-}+4 {H}^{+}

{H}_2 {~S}_2 {O}_8

{S}={O}

{S}-{OH}

{O}-

{O}

{NH}_3

{H}_2 {SO}_4

{H}_2 {SO}_4