MCQ
Correct statement(s) is/are
- Aan acidified solution of $K_2Cr_2O_7$ liberates iodine from $KI$
- B$K_2Cr_2O_7$ is used as a standard solution for estimation of $Fe^{2+}$ ions
- Cin acidic medium, $M = N/6$ for $K_2Cr_2O_7$
- ✓All of the above
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$Cu^{+2} +e^-\to Cu^+\,\,\,\,\,E^o = 0.15\,volt$
$Cu^{+2} + 2e^-\to Cu\,\,\,\,\,E^o = 0.34\, volt$
What will be the $E^o$ for half cell
$Cu^+ + e^-\to Cu$ ? ........... $\mathrm{volt}$

$C{H_3}N{H_2} + X + KOH \to C{H_3}NC$ (highly offensive odour)
