What is dead burnt plaster?

What is edema?

What is depressant?

What is an ore?

What is ppm?

What is leaching?

What is distance?

What is a shunt? What is its use?

What is meant by plane polarised light. What type of wave show these property?

What is a junction transistor. What are the different types of transistors? Show their schematic representation.

What is adsoption?