JEE Main · 2021 · Shift-IIeasyEC-034

Match List-I with List-II: | List-I (Parameter) | | List-II (Unit) | |---|---|---| | (a) Cell constant | | (i) S\ cm2\…

Electrochemistry · Class 12 · JEE Main Previous Year Question

Question

Match List-I with List-II:

| List-I (Parameter) | | List-II (Unit) | |---|---|---| | (a) Cell constant | | (i) S cm2 mol1\mathrm{S\ cm^2\ mol^{-1}} | | (b) Molar conductivity | | (ii) Dimensionless | | (c) Conductivity | | (iii) m1\mathrm{m^{-1}} | | (d) Degree of dissociation of electrolyte | | (iv) Ω1m1\Omega^{-1}\mathrm{m^{-1}} |

Options
  1. a

    (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)

  2. b

    (a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)

  3. c

    (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)

  4. d

    (a)-(ii), (b)-(i), (c)-(iii), (d)-(iv)

Correct Answera

(a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)

Detailed Solution

Strategy: Match standard electrochemical parameters with their SI/common CGS units.

Matching:

  • (a) Cell constant: l/A    m1l/A \implies \text{m}^{-1} or cm1 \text{cm}^{-1}. (Match iii)
  • (b) Molar conductivity: S cm2mol1 \text{S cm}^2 \text{mol}^{-1}. (Match i)
  • (c) Conductivity (κ\kappa): S m1 \text{S m}^{-1} or Ω1m1\Omega^{-1} \text{m}^{-1}. (Match iv)
  • (d) Degree of dissociation (α\alpha): A ratio of two similar quantities, hen\ce it's dimensionless. (Match ii)

Answer: (a) (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)\boxed{\text{Answer: (a) (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)}}

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Match List-I with List-II: | List-I (Parameter) | | List-II (Unit) | |---|---|---| | (a) Cell… (JEE Main 2021) | Canvas Classes