Nonmetal, is a substance having a finite activation energy (band gap) for electron conduction.This means that nonmetals display low (insulators) to mod- erate (semiconductors) bulk electrical conductivities, which increase with increasing temperature, and are subject to dielectric breakdown at high voltages and temperatures. Like metals, nonmetals may occur in the solid, liquid, or gaseous state. Oxygen, carbon, sulfur and chlorine are examples of non-metal elements.
1. _______ is a substance having a finite activation energy (band gap) for electron conduction.
a. Non-metal
b. Metal
2. Non metals display low conductivity are called as
a. Insulators
b. Semiconductors
c. Conductors
3. Non metals are in the form of -
a. Solid
b. Liquid
c. Gaseous
d. All of the above
4. State True or False. Increasing temperature, are subject to dielectric breakdown at high voltages and temperatures.
a. TRUE
b. FALSE
5. Examples of non-metals are -
a. Oxygen
b. Carbon
c. Chlorine
d. All of the above
