Last Updated:
High-temperature gas thermometry requires gases with very high dissociation temperatures. Option A (Up to 500°C) is incorrect — 500°C is within the range of hydrogen gas thermometers (-200°C to 500°C). Nitrogen thermometers can measure much higher temperatures than this. Option B (Up to 1000°C) is incorrect — 1000°C is not the upper limit of nitrogen gas thermometers. Nitrogen thermometers can exceed this range. Option C (Up to 1500°C) is CORRECT — Nitrogen gas thermometers can measure temperatures up to 1500°C. Nitrogen (N₂) has a very high dissociation temperature (~3000°C) and a high boiling point (-196°C), giving it a very wide gaseous range. This makes nitrogen ideal for high-temperature industrial measurements up to 1500°C. Option D (Up to 2000°C) is incorrect — 2000°C exceeds the practical reliable range of nitrogen gas thermometers.
FAQ
Common questions and clear answers for this topic.
Heat is a form of energy that transfers between objects or systems due to a temperature difference, moving from a hotter body to a cooler one until thermal equilibrium is reached.
