Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Electrochemistry question

2024 · 9 Apr · Shift 2 · Q9
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /JEE Main
  3. /Chemistry
  4. /Electrochemistry
  5. /2024 · 9 Apr · Shift 2 · Q9

Electrochemistry question

2024 · 9 Apr · Shift 2 · Q9

JEE MainChemistryElectrochemistryMCQ+4 / −1

Match List I with List II

LIST I
(Cell)		 LIST II
(Use/Property/Reaction)
A. Leclanche cell I. Converts energy of combustion into electrical energy
B. Ni - Cd cell II. Does not involve any ion in solution and is used in hearing aids
C. Fuel cell III. Rechargeable
D. Mercury cell IV. Reaction at anode Zn→Zn2++2e−\mathrm{Zn} \rightarrow \mathrm{Zn}^{2+}+2 \mathrm{e}^{-}Zn→Zn2++2e−

Choose the correct answer from the options given below :

  1. A
    A-III, B-I, C-IV, D-II
  2. B
    A-I, B-II, C-III, D-IV
  3. C
    A-IV, B-III, C-I, D-II
  4. D
    A-II, B-III, C-IV, D-I
View written solutionFree

Correct answer: C

  1. Identify each cell from List I and recall its key property/use/reaction.
  1. Leclanche cell

A Leclanche cell is the common dry cell.

  • The anode is zinc container.
  • Oxidation at anode is: Zn→Zn2++2e−\mathrm{Zn} \rightarrow \mathrm{Zn}^{2+} + 2e^-Zn→Zn2++2e−

So, A→IVA \to IVA→IV

  1. Ni-Cd cell

Nickel-cadmium cell is a secondary cell, i.e. it is rechargeable.

So, B→IIIB \to IIIB→III

  1. Fuel cell

A fuel cell converts the chemical energy of combustion directly into electrical energy.

So, C→IC \to IC→I

  1. Mercury cell

Mercury cell:

  • is used in small devices like hearing aids,
  • has paste electrolyte and no free aqueous ion participation in the usual sense of solution chemistry.

So, D→IID \to IID→II

  1. Final matching

Thus the correct match is:

  • A−IVA- IVA−IV
  • B−IIIB- IIIB−III
  • C−IC- IC−I
  • D−IID- IID−II

This corresponds to Option C.

  1. Comparison with stored correct answer

Stored correct answer = C

Our derived answer = C

Hence, they agree.

PreviousNext

More from Electrochemistry

  • The mass of silver (Molar mass of Ag:108 gmol−1) displaced by a quantity of electricity which displaces 5600 mL of O2​ at S.T.P. will be ​ g.2024 · Numerical
  • Which of the following statements is not correct about rusting of iron?2024 · MCQ
  • The hydrogen electrode is dipped in a solution of pH=3 at 25∘C. The potential of the electrode will be ​×10−2 V. (F2.303RT​=0.059 V)…2024 · Numerical
  • The mass of zinc produced by the electrolysis of zine sulphate solution with a steady current of 0.015 A for 15 minutes is ​×10−4 g. (Atomic mass of zinc =65.4 amu)2024 · Numerical
  • A constant current was passed through a solution of AuCl4−​ ion between gold electrodes. After a period of 10.0 minutes, the increase in mass of cathode was 1.314 g. The total charge passed through the solution is…2024 · Numerical
  • Alkaline oxidative fusion of MnO2​ gives "A" which on electrolytic oxidation in alkaline solution produces B. A and B respectively are2024 · MCQ
  • Reduction potential of ions are given below: ClO4−​E∘=1.19 V​IO4−​E∘=1.65 V​BrO4−​E∘=1.74 V​…2024 · MCQ
  • Identify the factor from the following that does not affect electrolytic conductance of a solution.2024 · MCQ