WorksheetsBAHAN KIMIA DALAM PERINDUSTRIAN
Total questions: 9
Worksheet time: 3mins
What is the word "band'' referring to?
Limited energy level of electron when atomic orbital comes in interaction
A measurement of electron energy
A range of allowed energy levels for electron when atomic orbital of metals comes in interaction
Energy that involve during electron jumping
A band that filled with energy from the valence electron known as ..............
Conduction Band
Valence Band
Inner Band
Band gap
Which of the following best defines the term "ore"
A precious metal used for currency
A type of rock that contain valuable minerals or elements
A synthetic material created through chemical processes
A form of energy derived from fossil fuels
What is the purpose of separating ores for both methods in metallurgy?
To refine ore into metallic form
To extract valuable minerals
To increase the ore's weight
To remove impurities and unwanted elements from the ore
The first process in extraction of an element from ore is typically ________
Roasting
Electrolysis
Crushing
Smelting
Smelting is done to eradicate unwanted materials like _______ and _______ to the fullest extent possible.
Copper
Copper and gangue minerals
Sulfur
Sulfur and gangue minerals
Why semiconductor is doped with impurities?
To increase resistance
To increase electrical conductivity
To eliminate band gap
To increase band gap
Which of the following is NOT a typical property of superconductors?
Zero electrical resistance
Perfect diamagnetism (Meissner effect)
High thermal conductivity
Ability to levitate in a magnetic field
Which of the following is NOT a typical property of most ceramics?
High hardness
Chemical inertness
Electrical conductivity
Brittleness
