Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

Electrochemistry question

2023 · 1 Feb · Shift 2 · Q12
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Chemistry
  4. /Electrochemistry
  5. /2023 · 1 Feb · Shift 2 · Q12

Electrochemistry question

2023 · 1 Feb · Shift 2 · Q12

JEE MainChemistryElectrochemistryMCQ+4 / −1
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R) Assertion (A) : An aqueous solution of KOH\mathrm{KOH}KOH when used for volumetric analysis, its concentration should be checked before the use. Reason (R) : On aging, KOH\mathrm{KOH}KOH solution absorbs atmospheric CO2\mathrm{CO}_{2}CO2​. In the light of the above statements, choose the correct answer from the options given below :
  1. A
    (A) is correct but (R) is not correct
  2. B
    (A) is not correct but (R) is correct
  3. C
    Both (A) and (R) are correct but (R) is not the correct explanation of (A)
  4. D
    Both (A) and (R) are correct and (R) is the correct explanation of (A)
PreviousNext

More from Electrochemistry

  • 1×10−5 M AgNO3​ is added to 1 L of saturated solution of AgBr. The conductivity of this solution at 298 K is ​×10−8 S m−1…2023 · Numerical
  • The standard electrode potential of M+/M in aqueous solution does not depend on2023 · MCQ
  • The standard reduction potentials at 298 K for the following half cells are given below: NO3−​+4H++3e−→NO(g)+2H2​OEθ=0.97 VV2+(aq)+2e−→VEθ=−1.19 VFe3+(aq)+3e−→FeEθ=−0.04 VAg+(aq)+e−→Ag(s)Eθ=0.80 VAu3+(aq)+3e−→Au(s)Eθ=1.40 V…2023 · Numerical
  • The reaction 21​H2​( g)+AgCl(s)⇌H+(aq)+Cl−(aq)+Ag(s) occurs in which of the given galvanic cell.2023 · MCQ
  • The number of incorrect statements from the following is ​. A. The electrical work that a reaction can perform at constant pressure and temperature is equal to the reaction Gibbs energy. B. Ecell∘​…2023 · Numerical
  • FeO42−​+2.2V​Fe3++0.70V​Fe2+−0.45V​Fe0 EFeO42−​/Fe2+θ​ is x×10−3 V. The value of x is ​2023 · Numerical
  • The specific conductance of 0.0025 M acetic acid is 5×10−5 S cm−1 at a certain temperature. The dissociation constant of acetic acid is ​× 10−7(Nearest…2023 · Numerical
  • In an electrochemical reaction of lead, at standard temperature, if E0( Pb2+/Pb)=m Volt and E0( Pb4+/Pb)=n Volt, then the…2023 · Numerical