Oxidation and Reduction, Redox Reactions
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CHXI08:REDOX REACTIONS

315349 For the the reaction
\(\mathrm{CrO}_{4}^{-2} \text { aq. }+2 \mathrm{H}^{+} \rightarrow \mathrm{Cr}_{2} \mathrm{O}_{7}^{2-} \text { (aq.) }+\mathrm{H}_{2} \mathrm{O}\),
element oxidised is

1 Oxygen
2 \(\mathrm{H}\)
3 Chromium
4 None
CHXI08:REDOX REACTIONS

315350 Assertion :
\(\mathrm{\mathrm{HClO}_{4}}\) is only oxidising agent
Reason :
\(\mathrm{\mathrm{Cl}}\) is most electronegative element in \({\rm{H}},\,\,{\rm{Cl}}\,\,{\rm{\& }}\,\,{\rm{O}}.\)

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
CHXI08:REDOX REACTIONS

315351 Which compound cannot be used as Reducing agent?

1 \(\mathrm{\mathrm{CO}_{2}}\)
2 \(\mathrm{\mathrm{HNO}_{2}}\)
3 \(\mathrm{\mathrm{H}_{3} \mathrm{PO}_{3}}\)
4 \(\mathrm{\mathrm{H}_{2} \mathrm{SO}_{3}}\)
CHXI08:REDOX REACTIONS

315352 The reducing agent among the following is

1 \(\mathrm{\mathrm{HNO}_{3}}\)
2 \(\mathrm{\mathrm{SO}_{3}}\)
3 \(\mathrm{\mathrm{H}_{2} \mathrm{~S}}\)
4 \(\mathrm{\mathrm{HNO}_{2}}\)
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CHXI08:REDOX REACTIONS

315349 For the the reaction
\(\mathrm{CrO}_{4}^{-2} \text { aq. }+2 \mathrm{H}^{+} \rightarrow \mathrm{Cr}_{2} \mathrm{O}_{7}^{2-} \text { (aq.) }+\mathrm{H}_{2} \mathrm{O}\),
element oxidised is

1 Oxygen
2 \(\mathrm{H}\)
3 Chromium
4 None
CHXI08:REDOX REACTIONS

315350 Assertion :
\(\mathrm{\mathrm{HClO}_{4}}\) is only oxidising agent
Reason :
\(\mathrm{\mathrm{Cl}}\) is most electronegative element in \({\rm{H}},\,\,{\rm{Cl}}\,\,{\rm{\& }}\,\,{\rm{O}}.\)

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
CHXI08:REDOX REACTIONS

315351 Which compound cannot be used as Reducing agent?

1 \(\mathrm{\mathrm{CO}_{2}}\)
2 \(\mathrm{\mathrm{HNO}_{2}}\)
3 \(\mathrm{\mathrm{H}_{3} \mathrm{PO}_{3}}\)
4 \(\mathrm{\mathrm{H}_{2} \mathrm{SO}_{3}}\)
CHXI08:REDOX REACTIONS

315352 The reducing agent among the following is

1 \(\mathrm{\mathrm{HNO}_{3}}\)
2 \(\mathrm{\mathrm{SO}_{3}}\)
3 \(\mathrm{\mathrm{H}_{2} \mathrm{~S}}\)
4 \(\mathrm{\mathrm{HNO}_{2}}\)
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CHXI08:REDOX REACTIONS

315349 For the the reaction
\(\mathrm{CrO}_{4}^{-2} \text { aq. }+2 \mathrm{H}^{+} \rightarrow \mathrm{Cr}_{2} \mathrm{O}_{7}^{2-} \text { (aq.) }+\mathrm{H}_{2} \mathrm{O}\),
element oxidised is

1 Oxygen
2 \(\mathrm{H}\)
3 Chromium
4 None
CHXI08:REDOX REACTIONS

315350 Assertion :
\(\mathrm{\mathrm{HClO}_{4}}\) is only oxidising agent
Reason :
\(\mathrm{\mathrm{Cl}}\) is most electronegative element in \({\rm{H}},\,\,{\rm{Cl}}\,\,{\rm{\& }}\,\,{\rm{O}}.\)

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
CHXI08:REDOX REACTIONS

315351 Which compound cannot be used as Reducing agent?

1 \(\mathrm{\mathrm{CO}_{2}}\)
2 \(\mathrm{\mathrm{HNO}_{2}}\)
3 \(\mathrm{\mathrm{H}_{3} \mathrm{PO}_{3}}\)
4 \(\mathrm{\mathrm{H}_{2} \mathrm{SO}_{3}}\)
CHXI08:REDOX REACTIONS

315352 The reducing agent among the following is

1 \(\mathrm{\mathrm{HNO}_{3}}\)
2 \(\mathrm{\mathrm{SO}_{3}}\)
3 \(\mathrm{\mathrm{H}_{2} \mathrm{~S}}\)
4 \(\mathrm{\mathrm{HNO}_{2}}\)
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CHXI08:REDOX REACTIONS

315349 For the the reaction
\(\mathrm{CrO}_{4}^{-2} \text { aq. }+2 \mathrm{H}^{+} \rightarrow \mathrm{Cr}_{2} \mathrm{O}_{7}^{2-} \text { (aq.) }+\mathrm{H}_{2} \mathrm{O}\),
element oxidised is

1 Oxygen
2 \(\mathrm{H}\)
3 Chromium
4 None
CHXI08:REDOX REACTIONS

315350 Assertion :
\(\mathrm{\mathrm{HClO}_{4}}\) is only oxidising agent
Reason :
\(\mathrm{\mathrm{Cl}}\) is most electronegative element in \({\rm{H}},\,\,{\rm{Cl}}\,\,{\rm{\& }}\,\,{\rm{O}}.\)

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
CHXI08:REDOX REACTIONS

315351 Which compound cannot be used as Reducing agent?

1 \(\mathrm{\mathrm{CO}_{2}}\)
2 \(\mathrm{\mathrm{HNO}_{2}}\)
3 \(\mathrm{\mathrm{H}_{3} \mathrm{PO}_{3}}\)
4 \(\mathrm{\mathrm{H}_{2} \mathrm{SO}_{3}}\)
CHXI08:REDOX REACTIONS

315352 The reducing agent among the following is

1 \(\mathrm{\mathrm{HNO}_{3}}\)
2 \(\mathrm{\mathrm{SO}_{3}}\)
3 \(\mathrm{\mathrm{H}_{2} \mathrm{~S}}\)
4 \(\mathrm{\mathrm{HNO}_{2}}\)
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