Which of the following minerals is primarily used as a source of alumina in ceramics?
Analysis & Theory
Bauxite is a major source of alumina (Al₂O₃) used in ceramic formulations.
Which mineral is a primary source of silica in ceramic bodies?
Analysis & Theory
Quartz (SiO₂) is the most common source of silica in ceramic raw materials.
Feldspar is used in ceramics mainly as a:
Analysis & Theory
Feldspar acts as a flux, lowering the melting temperature of the ceramic mixture.
Which of the following clay minerals is widely used in whiteware ceramics?
Analysis & Theory
Kaolinite is a primary component in whiteware such as porcelain due to its purity and whiteness.
What is the main role of talc in ceramic formulations?
B
Acting as a plasticizer
C
Supplying magnesium and acting as a flux
D
Increasing water retention
Analysis & Theory
Talc provides magnesium oxide and acts as a flux in certain ceramic bodies.
Which mineral contributes calcium oxide (CaO) to ceramic glazes?
Analysis & Theory
Dolomite is a double carbonate of calcium and magnesium, supplying CaO and MgO.
Ball clay is important in ceramic bodies due to its:
C
High plasticity and binding properties
Analysis & Theory
Ball clay is known for its plasticity and is used to enhance workability in ceramic formulations.
Which mineral is commonly used to increase the whiteness and brightness of ceramic products?
Analysis & Theory
Zircon is used in ceramics to improve opacity, brightness, and whiteness.
Which of the following is a fluxing agent in ceramic glazes and bodies?
Analysis & Theory
Feldspar melts at relatively low temperatures and helps form a glassy phase in ceramics.
Why is calcite used in ceramic formulations?
A
To increase iron content
C
As a source of calcium oxide
Analysis & Theory
Calcite (CaCO₃) decomposes to provide CaO, which influences glaze texture and color.