Question

\(\ldots\ldots\ldots\ldots\ldots\) is used for boosting of glass batch by electrical heating.

• A. Mo electrode
• B. Ag electrode
• C. Pt electrode
• D. C electrode

Hint:

Molybdenum electrodes are commonly used in glass furnace electrical boosting because they can withstand high temperature and conduct electricity well.

Answer 1

The Correct Option is A

In glass melting furnaces, electrical boosting is used to increase the melting efficiency. Electrical boosting means additional heat is supplied directly to the glass melt by passing electric current through it. For this purpose, electrodes are inserted into the molten glass. The electrode material must satisfy important requirements: \[ \text{It should withstand high temperature,} \] \[ \text{it should resist corrosion by molten glass,} \] and \[ \text{it should conduct electricity properly.} \] Molybdenum electrodes are commonly used for electrical boosting in glass melting furnaces. Molybdenum has a very high melting point and good electrical conductivity. It also performs well in molten glass under suitable furnace conditions. Silver electrode is not used because silver has a lower melting point and is not suitable for high-temperature glass melting. Platinum is expensive and generally used in special applications. Carbon electrodes may contaminate the glass and are not preferred for this purpose. Therefore, the electrode used for boosting of glass batch by electrical heating is: \[ \text{Mo electrode}. \]