Statement I: In case of solids, conduction is electronic conduction

Statement II: Electronic conduction is due to flow of electrons

Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement I

The correct answer is 1. Both Statement I and Statement II are correct, and Statement II is the correct explanation of Statement I.

Statement I is correct:  In the case of solids, conduction is indeed electronic conduction. Electronic conduction refers to the flow of electric charge through a material due to the movement of electrons. Solids can conduct electricity through the movement of electrons within their crystal lattice structure.

Statement II is the correct explanation of Statement I:  Electronic conduction occurs due to the flow of electrons. When an electric field is applied to a solid material, the electrons in the material can gain energy and move through the lattice, creating an electric current. In metals and some semiconductors, the electrons in the valence band are loosely bound and can move freely, allowing for efficient electronic conduction.

In summary, both statements are correct, and Statement II provides the correct explanation for why conduction in solids is electronic conduction. Option 1 is the correct choice.