General characteristics of the transition elements
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CHXII08:THE D- & F-BLOCK ELEMENTS

321393 When \(\mathrm{\mathrm{Cu}^{2+}}\) ion is treated with \(\mathrm{\mathrm{KI}}\), a white precipitate ' \(\mathrm{\mathrm{X}}\) ' is formed. Identify the \(\mathrm{\mathrm{X}}\)

1 \(\mathrm{\mathrm{CuI}_{2}}\)
2 \(\mathrm{\mathrm{CuI}_{4}}\)
3 \(\mathrm{\mathrm{Cu}_{2} \mathrm{I}_{2}}\)
4 \(\mathrm{\mathrm{I}_{2}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321394 Select the disproportionation reaction which is expected to be spontaneous in aq. solution.

1 \(\mathrm{MnO}_{4}^{2-} \xrightarrow{\mathrm{H}^{+}} \mathrm{MnO}_{4}^{-}+\mathrm{MnO}_{2}\)
2 \(\mathrm{Cu}^{+} \rightarrow \mathrm{Cu}^{2+}+\mathrm{Cu}\)
3 Both (1) and (2)
4 Neither (1) nor (2)
CHXII08:THE D- & F-BLOCK ELEMENTS

321395 A metal M is not affected by strong acids like conc. \(\mathrm{HNO}_{3}\), conc. \(\mathrm{H}_{2} \mathrm{SO}_{4}\), and conc. solution of alkalies like \(\mathrm{NaOH}, \mathrm{KOH}\). It forms \(\mathrm{MCl}_{3}\) which is used for toning in photography. The metal M is

1 Ag
2 Hg
3 Au
4 Cu
CHXII08:THE D- & F-BLOCK ELEMENTS

321396 Assertion :
On heating \(\mathrm{HgCl}_{2}\) sublimes.
Reason :
\(\mathrm{HgCl}_{2}\) and \(\mathrm{SnCl}_{2}\) exist together in aqueous solution.

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.
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CHXII08:THE D- & F-BLOCK ELEMENTS

321393 When \(\mathrm{\mathrm{Cu}^{2+}}\) ion is treated with \(\mathrm{\mathrm{KI}}\), a white precipitate ' \(\mathrm{\mathrm{X}}\) ' is formed. Identify the \(\mathrm{\mathrm{X}}\)

1 \(\mathrm{\mathrm{CuI}_{2}}\)
2 \(\mathrm{\mathrm{CuI}_{4}}\)
3 \(\mathrm{\mathrm{Cu}_{2} \mathrm{I}_{2}}\)
4 \(\mathrm{\mathrm{I}_{2}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321394 Select the disproportionation reaction which is expected to be spontaneous in aq. solution.

1 \(\mathrm{MnO}_{4}^{2-} \xrightarrow{\mathrm{H}^{+}} \mathrm{MnO}_{4}^{-}+\mathrm{MnO}_{2}\)
2 \(\mathrm{Cu}^{+} \rightarrow \mathrm{Cu}^{2+}+\mathrm{Cu}\)
3 Both (1) and (2)
4 Neither (1) nor (2)
CHXII08:THE D- & F-BLOCK ELEMENTS

321395 A metal M is not affected by strong acids like conc. \(\mathrm{HNO}_{3}\), conc. \(\mathrm{H}_{2} \mathrm{SO}_{4}\), and conc. solution of alkalies like \(\mathrm{NaOH}, \mathrm{KOH}\). It forms \(\mathrm{MCl}_{3}\) which is used for toning in photography. The metal M is

1 Ag
2 Hg
3 Au
4 Cu
CHXII08:THE D- & F-BLOCK ELEMENTS

321396 Assertion :
On heating \(\mathrm{HgCl}_{2}\) sublimes.
Reason :
\(\mathrm{HgCl}_{2}\) and \(\mathrm{SnCl}_{2}\) exist together in aqueous solution.

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.
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CHXII08:THE D- & F-BLOCK ELEMENTS

321393 When \(\mathrm{\mathrm{Cu}^{2+}}\) ion is treated with \(\mathrm{\mathrm{KI}}\), a white precipitate ' \(\mathrm{\mathrm{X}}\) ' is formed. Identify the \(\mathrm{\mathrm{X}}\)

1 \(\mathrm{\mathrm{CuI}_{2}}\)
2 \(\mathrm{\mathrm{CuI}_{4}}\)
3 \(\mathrm{\mathrm{Cu}_{2} \mathrm{I}_{2}}\)
4 \(\mathrm{\mathrm{I}_{2}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321394 Select the disproportionation reaction which is expected to be spontaneous in aq. solution.

1 \(\mathrm{MnO}_{4}^{2-} \xrightarrow{\mathrm{H}^{+}} \mathrm{MnO}_{4}^{-}+\mathrm{MnO}_{2}\)
2 \(\mathrm{Cu}^{+} \rightarrow \mathrm{Cu}^{2+}+\mathrm{Cu}\)
3 Both (1) and (2)
4 Neither (1) nor (2)
CHXII08:THE D- & F-BLOCK ELEMENTS

321395 A metal M is not affected by strong acids like conc. \(\mathrm{HNO}_{3}\), conc. \(\mathrm{H}_{2} \mathrm{SO}_{4}\), and conc. solution of alkalies like \(\mathrm{NaOH}, \mathrm{KOH}\). It forms \(\mathrm{MCl}_{3}\) which is used for toning in photography. The metal M is

1 Ag
2 Hg
3 Au
4 Cu
CHXII08:THE D- & F-BLOCK ELEMENTS

321396 Assertion :
On heating \(\mathrm{HgCl}_{2}\) sublimes.
Reason :
\(\mathrm{HgCl}_{2}\) and \(\mathrm{SnCl}_{2}\) exist together in aqueous solution.

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.
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CHXII08:THE D- & F-BLOCK ELEMENTS

321393 When \(\mathrm{\mathrm{Cu}^{2+}}\) ion is treated with \(\mathrm{\mathrm{KI}}\), a white precipitate ' \(\mathrm{\mathrm{X}}\) ' is formed. Identify the \(\mathrm{\mathrm{X}}\)

1 \(\mathrm{\mathrm{CuI}_{2}}\)
2 \(\mathrm{\mathrm{CuI}_{4}}\)
3 \(\mathrm{\mathrm{Cu}_{2} \mathrm{I}_{2}}\)
4 \(\mathrm{\mathrm{I}_{2}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321394 Select the disproportionation reaction which is expected to be spontaneous in aq. solution.

1 \(\mathrm{MnO}_{4}^{2-} \xrightarrow{\mathrm{H}^{+}} \mathrm{MnO}_{4}^{-}+\mathrm{MnO}_{2}\)
2 \(\mathrm{Cu}^{+} \rightarrow \mathrm{Cu}^{2+}+\mathrm{Cu}\)
3 Both (1) and (2)
4 Neither (1) nor (2)
CHXII08:THE D- & F-BLOCK ELEMENTS

321395 A metal M is not affected by strong acids like conc. \(\mathrm{HNO}_{3}\), conc. \(\mathrm{H}_{2} \mathrm{SO}_{4}\), and conc. solution of alkalies like \(\mathrm{NaOH}, \mathrm{KOH}\). It forms \(\mathrm{MCl}_{3}\) which is used for toning in photography. The metal M is

1 Ag
2 Hg
3 Au
4 Cu
CHXII08:THE D- & F-BLOCK ELEMENTS

321396 Assertion :
On heating \(\mathrm{HgCl}_{2}\) sublimes.
Reason :
\(\mathrm{HgCl}_{2}\) and \(\mathrm{SnCl}_{2}\) exist together in aqueous solution.

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.
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