__________ glass is used in the mercury in glass thermometer meant for measuring a temperature of 500°C.

ANS:C - Supermax

"Supermax" does not refer to a specific type of glass commonly used in thermometers or other scientific instruments. It's possible that "Supermax" could refer to a specific brand, product line, or proprietary glass formulation used by a particular manufacturer, but without further context or information, it's difficult to provide an explanation. If "Supermax" is indeed a specific type of glass used in thermometers or other applications, it would be helpful to have additional details or specifications about its composition, properties, and intended uses in order to provide a meaningful explanation. If you have any other questions or if there's additional context you can provide, please feel free to share, and I'd be happy to assist you further.