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Which metal is used in thermometers?...

Which metal is used in thermometers?

A

Calcium

B

Mercury

C

Barium

D

Zinc

Text Solution

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The correct Answer is:
**Step-by-Step Solution:** 1. **Identify the Question**: The question asks which metal is used in thermometers. 2. **Recall the Common Metals Used in Thermometers**: The most common metal used in thermometers is mercury. 3. **Explain Why Mercury is Used**: - **Liquid State at Room Temperature**: Unlike most metals, mercury is a liquid at room temperature, which allows it to expand and contract easily with temperature changes. - **High Boiling Point**: Mercury has a high boiling point, making it suitable for measuring a wide range of temperatures without evaporating. - **Non-Sticking Property**: Mercury does not stick to the walls of the glass tube in which it is contained, allowing for accurate readings. - **High Conductivity**: Mercury has good thermal conductivity, which helps it respond quickly to temperature changes. - **Availability in Pure Form**: Mercury can be obtained in a pure form, which is essential for precise measurements. 4. **Conclude the Answer**: Therefore, the metal used in thermometers is mercury. ---
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