Laboratory thermometers typically use mercury as the liquid, appreciated for its wide temperature range and consistent thermal expansion. However, some modern versions use colored alcohol, providing safer alternatives while maintaining accuracy in temperature measurement.
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The liquid commonly used in laboratory thermometers is mercury, known for its wide range of temperature measurement and reliable thermal expansion properties. Mercury can accurately measure temperatures from approximately -39°C to 356°C. However, due to mercury’s toxicity and environmental concerns, some modern laboratory thermometers utilize colored alcohol instead. This alcohol expands uniformly with temperature changes and is safer to handle. Both types are effective for measuring temperatures in scientific experiments, though mercury thermometers are being phased out in favor of safer alternatives.
For more CBSE Class 6 Science Curiosity Chapter 7 Temperature and its Measurement Extra Questions & Answer:
https://www.tiwariacademy.com/ncert-solutions-class-6-science-curiosity-chapter-7/