Question:
Surface alkalinity of Glass is measured by using
Surface alkalinity of Glass is measured by using
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Autoclave testing is used when high-pressure steam conditions are needed for testing glass or ceramic surfaces.
Updated On: May 7, 2026
- Autoclave
- Impact tester
- Flame photometer
- Dilatometer
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The Correct Option is A
Solution and Explanation
Concept:
Surface alkalinity of glass is related to the alkali released from the glass surface under severe testing conditions.
Step 1: Glass contains alkali oxides such as: \[ Na_2O,\ K_2O \]
Step 2: Under moisture, steam, or pressure conditions, alkali may leach out from the glass surface.
Step 3: An autoclave provides high-pressure steam conditions.
Step 4: These conditions accelerate the surface reaction and help in measuring surface alkalinity.
Step 5: Impact tester measures impact strength, flame photometer measures metal ions, and dilatometer measures thermal expansion. Therefore, surface alkalinity of glass is measured by: \[ \boxed{\text{Autoclave}} \]
Step 1: Glass contains alkali oxides such as: \[ Na_2O,\ K_2O \]
Step 2: Under moisture, steam, or pressure conditions, alkali may leach out from the glass surface.
Step 3: An autoclave provides high-pressure steam conditions.
Step 4: These conditions accelerate the surface reaction and help in measuring surface alkalinity.
Step 5: Impact tester measures impact strength, flame photometer measures metal ions, and dilatometer measures thermal expansion. Therefore, surface alkalinity of glass is measured by: \[ \boxed{\text{Autoclave}} \]
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