MCQ
Which compound will react with an aqueous solution of $Ag(N{H_3})_2^ + O{H^ - }$
- A$C{H_2} = C{H_2}$
- B$C{H_3} - C{H_3}$
- ✓$C{H_3}C{H_2}C \equiv CH$
- D$C{H_3} - C \equiv C - C{H_3}$
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$(A)\,Cu$ $(II)$ complexes are always paramagnetic
$(B)\,Cu$ $(I)$ complexes are generally colourless
$(C)\,Cu$ $( I )$ is easily oxidized
$(D)$ In Fehling solution, the active reagent has $Cu$ $( I )$
$6 OH ^{-}+ Cl ^{-} \rightarrow ClO _{3}^{-}+3 H _{2} O +6 e ^{-}$
If only $60 \%$ of the current is utilized in the reaction, the time (rounded to the nearest hour) required to produce $10\, g$ of $KCIO _{3}$ using a current of $2\, A$ is..........
(Given : $F =96,500\, C\, mol ^{-1}$ molar mass of $\left. KClO _{3}=122\,gmol ^{-1}\right)$
