Question

Match List-I with List-II \[ \begin{array}{|l|l|l|} \hline \textbf{List-I} & \textbf{List-II} & \textbf{Matches} \\ \hline (A) \; \text{Cell constant} & (I) \; \text{cm}^{-1} & (A) - (I) \\ \hline (B) \; \text{Molar conductance} & (II) \; \Omega^{-1}\,\text{cm}^2\,\text{mol}^{-1} & (B) - (II) \\ \hline (C) \; \text{Specific conductance} & (III) \; \Omega^{-1}\,\text{cm}^{-1} & (C) - (III) \\ \hline (D) \; \text{Conductance} & (IV) \; \Omega^{-1} & (D) - (IV) \\ \hline \end{array} \]

• (A) - (I), (B) - (II), (C) - (III), (D) - (IV)
• (A) - (I), (B) - (III), (C) - (II), (D) - (IV)
• (A) - (II), (B) - (III), (C) - (IV), (D) - (I)
• (A) - (IV), (B) - (II), (C) - (III), (D) - (I)

Hint:

Ensure you understand the units associated with each property when matching them in electrochemical contexts.

Answer 1

The Correct Option is A

To solve this matching question related to the concepts of conductivity in chemistry, we will identify the correct matches based on the definitions and units of the terms provided in List-I and List-II.

1. Cell constant (A - I): The cell constant is a geometrical factor that relates to the setup of the conductivity cell. It is defined as the ratio of the distance between the electrodes to the area of cross-section of the electrodes. The unit of cell constant is \(\text{cm}^{-1}\).
2. Molar conductance (B - II): Molar conductance refers to the conductance of an electrolyte solution divided by its concentration, normalized to one mole of electrolyte. It has the unit \(\Omega^{-1}\,\text{cm}^2\,\text{mol}^{-1}\).
3. Specific conductance (C - III): Also known as conductivity, specific conductance is the conductance of a solution of unit length and unit cross-sectional area. Its unit is \(\Omega^{-1}\,\text{cm}^{-1}\).
4. Conductance (D - IV): Conductance is a measure of how easily electricity flows through a material. It is the reciprocal of resistance, and its unit is \(\Omega^{-1}\).

From the above analysis, the correct matches from List-I to List-II are:

• (A) Cell constant - (I) \(\text{cm}^{-1}\)
• (B) Molar conductance - (II) \(\Omega^{-1}\,\text{cm}^2\,\text{mol}^{-1}\)
• (C) Specific conductance - (III) \(\Omega^{-1}\,\text{cm}^{-1}\)
• (D) Conductance - (IV) \(\Omega^{-1}\)

The correct answer is therefore (A) - (I), (B) - (II), (C) - (III), (D) - (IV).