Question

What is the function of feldspar in glaze?

• A. Acts as a flux and lowers the melting point
• B. Provides color
• C. Adds opacity
• D. Enhances texture

Hint:

Feldspar is essential in glazes because it helps to lower the melting point of the glaze, making the firing process more efficient.

Answer 1

The Correct Option is A

Step 1: Understanding Feldspar in Glaze.
Feldspar is commonly used in ceramic glazes to help lower the melting point of the glaze materials. It acts as a flux, promoting better fusion of the glaze ingredients during firing.
Step 2: Analysis of options.
- (1) Acts as a flux and lowers the melting point: Correct, feldspar is used as a flux in glazes, lowering the melting point of the glaze.
- (2) Provides color: Incorrect, feldspar is colorless in glazes.
- (3) Adds opacity: Incorrect, feldspar is not typically used for opacity in glazes.
- (4) Enhances texture: Incorrect, feldspar is not specifically used to enhance texture in glazes.
Step 3: Conclusion.
Thus, the correct answer is (1) Acts as a flux and lowers the melting point.