MCQ
${\left[ {Co{{\left( {N{H_3}} \right)}_4}C{l_2}} \right]^ + }$ exhibits
- ✓Geometrical isomerism
- BOptical isomerism
- CBonding isomerism
- DIonisation isomerism

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$C{H_3}COOH + PC{l_5} \to A\mathop {\xrightarrow{{{C_6}{H_6}}}}\limits_{anh.\,AlC{l_3}} $ $B\mathop {\xrightarrow{{{C_2}{H_5}MgBr}}}\limits_{ether} C$
The rate of reaction when the concentration of $A$ is $0.01\, M$ is ............$\times 10^{-4}\,M/ \min$