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JEE Main levelSingle correct optionDifficulty 2 of 3cc128

At the same molar concentration, which is the correct order of increasing molar conductivity of (I), (II), (III) and (IV)?

  1. AIV < II < III < I
  2. BIII < IV < II < I
  3. CIV < III < II < I
  4. DI < II < III < IV

Answer: C

Molar conductivity rises with the number of ions per formula unit: I gives 4, II gives 3, III gives 2 and IV gives 0. So the order is IV < III < II < I.
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