Download App

STD 12 - 2. Electrochemistry — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 - 2. Electrochemistry4 Marks
MCQ
Copper sulphate solution is electrolysed between two platinum electrodes. A current is passed until $1.6 \ g$ of oxygen is liberated at anode. The amount of copper deposited at the cathode during the same period is .............. $\mathrm{g}$ [At. mass of $Cu = 6 3. 6$]
  • ✓
    $6.36$
  • B
    $63.6$
  • C
    $12.7$
  • D
    $3.2$
✓

Answer

Correct option: A.
$6.36$
a
For $\mathrm{O}_{2}$,   $\mathrm{m}=\frac{\mathrm{E} \times \mathrm{Q}}{\mathrm{nF}}$ and $\mathrm{Q}=\frac{\mathrm{m}}{\mathrm{E}} \times \mathrm{nF}=0.2\, \mathrm{F}$

For $Cu$,   ${\text{m}} = \frac{{{\text{E}} \times {\text{Q}}}}{{{\text{nF}}}} = $ $\frac{{63.5}}{{2 \times {\text{F}}}} \times 0.2\,{\text{F}} = 6.36\,{\text{g}}$

Hence; $(1)$ is correct.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

When aniline reacts with $NaN{O_2}$ and dil. $HCl$ at ${0\,^o} - {5\,^o}C,$ the product formed is
→
Glycerol is used in the manufacture of
→
is
→
How much faster would a reaction proceed at $25\,^oC$ than at $0\,^oC$ if the activation energy is $65\,kJ$ ....... times
→
Which of the following statements is incorrect?
→
An ideal solution has two component $A$ and $B$. If $A$ is more volatile than $B$ then, the correct relation between mole fraction of $A$ in liquid $(X_A)$ and vapour phase $(Y_A)$ is
→
Hydrolysis of alkyl isocyanide yields:
→
In Goldschmidt aluminothermic process, thermite contains
→
Which one of the following bonds has the highest bond energy ?
→
Which compound has the highest value of $pK_a$ ?
→