What is catalysis? Distinguish between homogeneous and heterogeneous catalysis with examples.
What is the rate constant of a reaction? Describe the relationship between the rate constant and temperature, according to the Arrhenius equation.
Define the standard electrode potential. Explain its significance in predicting the spontaneity of redox reactions.
Define amplitude modulation. What are the advantages and disadvantages of amplitude modulation in communication systems?
Explain the concept of intrinsic and extrinsic semiconductors. What is the role of doping in extrinsic semiconductors?
Describe Bohr’s postulates for the model of the hydrogen atom. How does this model explain the line spectrum of hydrogen?
State Einstein’s photoelectric equation. Explain the terms involved and discuss the significance of the work function.