MCQ
$96500 $ coulombs of electric current liberates from $CuS{O_4}$ solution .............. $\mathrm{gm\,\,Cu}$
- A$63.5$
- ✓$31.75$
- C$96500$
- D$100$
✓
Answer
Correct option: B.
$31.75$
b
(b)$C{u^{ + + }} + 2{e^ - } \to Cu$; ${E_{Cu}} = \frac{{63.55}}{2} = 31.75\,\,gm\,\,Cu$.
(b)$C{u^{ + + }} + 2{e^ - } \to Cu$; ${E_{Cu}} = \frac{{63.55}}{2} = 31.75\,\,gm\,\,Cu$.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The atomic number of an element is derived from
Consider the following equations:
→$2 Fe ^{2+}+ H _{2} O _{2} \rightarrow x A + y B$
(in basic medium)
$2 MnO _{4}^{-}+6 H ^{+}+5 H _{2} O _{2} \rightarrow x ^{\prime} C + y ^{\prime} D + z ^{\prime} E$
(in acidic medium)
The sum of the stoichiometric coefficients $x , y , x ^{\prime}, y ^{\prime}$ and $z ^{\prime}$ for products $A , B , C , D$ and $E ,$ respectively, is............
Choose the incorrect formula out of the four compounds for an element $X$ below
→The name of complex ion, $[Fe(CN)_6]^{3-}$ is
→Complexes given below show
Grignard reagents do not give carbonyl compounds with :
Identify the correct reactivity order for $E_2$ reaction with alc. $KOH$
→The correct statement $(s)$ among $I$ to $III$ with respect to potassium ions that are abundant within the cell fluids is/are :
→$I.$ They activate many enzymes
$II.$ They participate in the oxidation of glucose to produce $ATP$
$III.$ Along with sodium ions, they are responsible for the transmission of nerve signals
The formula of the purple colour formed in Laissaigne's test for sulphur using sodium nitroprusside is ......
......... $gm$ of solute $(mol.wt. 60)$ is required to dissolve in $180\, g$ of water to reduce the vapour pressure to $\frac{5}{6}^{th}$ of pure water ?
→