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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then $X$ is

$(a)$ $PhCOOH$
$(B)$ $o-NO_2C_6H_4COOH$
$(C)$ $p-NO_2C_6H_4COOH$
$(D)$ $m-NO_2C_6H_4COOH$
Reason : Zinc has a more negative electrode potential than iron.
Assertion $(A) :$ Sucrose is a disaccharide and a non-reducing sugar.
Reason $(R) :$ Sucrose involves glycosidic linkage between $C_{1}$ of $\beta$-glucose and $C_{2}$ of $\alpha$-fructose.
Choose the most appropriate answer from the options given below :