Download App

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

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 12 - 2. Electrochemistry4 Marks
MCQ
How can an electrochemical cell be converted into an electrolytic cell?
  • ✓
    Applying an external opposite potential greater than $\mathrm{E}_{\text {cell }}^0$
  • B
    Reversing the flow of ions in salt bridge.
  • C
    Applying an external opposite potential lower than $\mathrm{E}_{\text {cell }}^0$.
  • D
    Exchanging the electrodes at anode and cathode.
✓

Answer

Correct option: A.
Applying an external opposite potential greater than $\mathrm{E}_{\text {cell }}^0$
a
Applied external potential should be greater than $\mathrm{E}_{\text {cell }}^0$ in opposite direction.

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

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

Similar questions

Which of the following are diamagnetic?

$(I)\, K_4 [Fe(CN)_6]$   $(II)\, K_3[Cr(CN)_6]$   $(III)\, K_3 [Co(CN)_6]$ $(IV)\, K_2[Ni(CN)_4]$

Select the correct answer using the codes given below

→
When the value of azimuthal quantum number is $3$ , magnetic quantum number can have values
→
Number of molecules/species from the following having one unparred electron $15$. . . . . .  $\mathrm{O}_2, \mathrm{O}_2^{-1}, \mathrm{NO}, \mathrm{CN}^{-1}, \mathrm{O}_2^{2-}$
→
The concentration of $KI $ and $KCl$  in certain solution containing both is $0.001\,M $ each. If $20 \,ml$  of this solution is added to $20 \,ml $ of a saturated solution of $AgI $ in water? What will happen
→
The mass of $N_2F_4$  produced by the reaction of  $2.0\,\,mole$ of  $NH_3$ and $8.0\,\, mole$  of $F_2$ is $0.5\,\,mole.$  What is the per cent yield ?

$2NH_3 + 5F_2\,\,\to \,\, N_2F_4 + 6HF$

→
In an aqueous solution of $NaCl$ mole fraction of solvent is $0.9$ then relative lowering in vapour pressure will be ......... $atm$.
→
Which of following statement is correct ?
→
Which reaction is not possible
→
The $ EAN $ of iron in potassium ferricyanide is
→
Which among the following statement is incorrect for glucose ?
→