JEE CHEMISTRY MCQ: P-BLOCK ELEMENTS

1 Easy

1 of 1

Understanding +4 | -1

Assertion (A) : In aqueous solution,

\mathrm{SO}_2

reacts with

\mathrm{H}_2 \mathrm{S}

forming sulphur.

Reason (R):

\mathrm{SO}_2

is an effective reducing agent.

View answer and explanation

Correct option: B

Both

\mathbf{A}

and

\mathbf{R}

are true but

\mathbf{R}

is not the correct explanation of

\mathbf{A}

Option B is correct because both the assertion and reason are true, but the reason does not explain the assertion.

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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