List of top Nano Science Questions on Electric Conductivity

Assertion A: Superconductivity arises from electrons forming Cooper pairs due to electron phonon interaction Reason R: Cooper pairs have lower energy and move without scattering leading to zero resistance In the light of the above statements, choose the most appropriate answer from the options given below
• Both A and R are correct and R is the correct explanation of A
• Both A and R are correct but R is NOT the correct explanation of A
• A is correct but R is not correct
• A is not correct but R is correct

Assertion A: Entropy is a state function Reason R: Its value is independent of initial and final states and depends on path taken In the light of the above statements, choose the most appropriate answer from the options given below
• Both A and R are correct and R is the correct explanation of A
• Both A and R are correct but R is NOT the correct explanation of A
• A is correct but R is not correct
• A is not correct but R is correct

Arrange the following steps in the correct sequence to calculate the electrode potential of a polymer electrolyte system using the Nernst equation. \[ A.\ \text{Substitute value into the Nernst equation} \] \[ B.\ \text{Write the balanced electrode reaction} \] \[ C.\ \text{Identify the ionic species and their concentration in polymer electrolyte} \] \[ D.\ \text{Calculate the electrode potential under non-standard conditions} \] Choose the correct answer from the options given below:
• \( \mathrm{C \rightarrow B \rightarrow A \rightarrow D} \)
• \( \mathrm{B \rightarrow C \rightarrow A \rightarrow D} \)
• \( \mathrm{B \rightarrow A \rightarrow C \rightarrow D} \)
• \( \mathrm{A \rightarrow B \rightarrow C \rightarrow D} \)

Which of the below property is shown by all ionic compound?
• High volatility
• Very poor electrical conductivity below the melting point
• Low boiling point
• High solubility in water

The dimensions of electrical conductivity is

If no thermal energy is developed as the charge goes through the battery, then such a battery is called

In a discharge tube electric conduction does not occur due to the movement of