Enthalpy (Complete Discussion) || Relationship between ΔH and ΔU (Very Very imp.)

The relationship between enthalpy and internal energy change is

What is diagonal relationship ? Discuss the diagonal relationship between Be and Al giving main similarites.

Discuss the phase relationship between current and emf in an circuit containing a capacitance only.

Major Question Discussion || Very important Question 6 and 4 about linear being zero and Quadratic being zero (conditions)