MCQ
Unknown compound $(A)$ is


- A

- ✓

- C

- D








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|
सूची-$I$ coordination compounds |
सूची-$II$ numbar of unpaired electrons |
| $A$ $\left[ Cr ( CN )_6\right]^{3-}$ | $I$ $0$ |
| $B$ $\left[ Fe \left( H _2 O \right)_6\right]^{2+}$ | $II$ $3$ |
| $C$ $\left[ Co \left( NH _3\right)_6\right]^{3+}$ | $III$ $2$ |
| $D$ $\left[ Ni \left( NH _3\right)_6\right]^{2+}$ | $IV$ $4$ |
Choose the correct answer from the options given below :-
$\begin{array}{*{20}{c}}
\,\,\,{{C_2}{H_5}} \\
{|\,\,\,\,\,\,\,} \\
{C{H_3} - C - COOH} \\
{|\,\,\,\,\,\,} \\
\,\,\,{{C_3}{H_7}}
\end{array}\xrightarrow{{{N_3}H/Conc.\,{H_2}S{O_4}}}\begin{array}{*{20}{c}}
\,\,\,\,\,\,\,\,\,{{C_2}{H_5}} \\
| \\
{C{H_3} - C - N{H_2}} \\
| \\
\,\,\,\,\,\,\,\,\,{{C_3}{H_7}}
\end{array}$
is called :