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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image
$\mathop {C{H_3} - C{H_2} - N{H_2}}\limits_{\mathop 2\limits } \,$$\,\mathop {{{(C{H_3})}_2}NH}\limits_{\mathop 3\limits } $
$\mathop {C{H_3} - \mathop {\mathop C\limits^{||} }\limits^O - N{H_2}}\limits_4 $