Which of the following statements is correct?

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) Option $A$ is incorrect because the conversion of chromate to dichromate occurs in acidic medium $(pH < 7)$,not basic. The correct reaction is $2C

Vedclass · Accepted Answer

$+2$ oxidation state is shown by $Ce, Tb$

Vedclass · Answer

(D) Option $A$ is incorrect because the conversion of chromate to dichromate occurs in acidic medium $(pH Option $B$ is incorrect because $I^-$ is oxidized to $I_2$ by $KMnO_4$ in acidic medium,not $IO_3^-$.Option $C$ is incorrect because Misch metal is an alloy consisting of a lanthanoid metal (typically $Ce$ $\approx 50\%$,$La$ $\approx 25\%$,$Nd$ $\approx 18\%$,$Pr$ $\approx 5\%$) and iron ($Fe$ $\approx 5\%$).Option $D$ is correct because $Ce$ and $Tb$ are known to exhibit the $+2$ oxidation state in addition to their common $+3$ state.

Similar Questions

Which of the following ions is paramagnetic?

Which of the following elements are not regarded as transition elements?

Addition of non-metals like $B$ and $C$ to the interstitial sites of a transition metal results in the metal becoming:

Which of the following elements has the maximum first ionisation potential?

Vedclass Test Series

Exam Paper Generator

Online Exam Module