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Step 1: Mercury Thermometers. A mercury thermometer consists of a glass tube filled with mercury and labelled with a standard temperature scale. Temperature fluctuations cause the mercury to expand and shrink. Mercury thermometers are employed in scientific investigations, as well as in homes and businesses. Step 2: Mercury used in thermometers
Turn on the thermometer and click till the number zero appears on the display. Place the tip of the thermometer under the armpit. Wait for a few seconds before you hear the alarm from the thermometer. Remove the thermometer and check for the temperature on the display.
Mercury is used in thermometers because It has a high coefficient of expansion so that even a small rise in temperature brings about sufficient expansion which can be detected in the capillary of the calibrated part of the thermometer. Suggest Corrections. 415.
1) It is toxic in nature, even small traces of mercury in blood is harmful. Suggest Corrections. 92.
Q. Assertion :Alcohol rather then mercury is used in a thermometer to measure a temperature of − 60 o C. Reason: Alcohol has a lower freezing point than mercury. Q. Mercury or alcohol is commonly used in the thermometers.
The correct option is A Thermal expansion of liquids. Mercury thermometer work on the principle of thermal expansion of liquids. In case of mercury thermometer, mercury (liquid) expands when the temperature increases. This rise in the level of mercury gives the temperature readings. Suggest Corrections.
Solution. Most metals are good conductors of heat and they are solids at room temperature. Mercury is the only one in liquid state at room temperature. It's used in thermometers because it has high coefficient of expansion. Hence, the slightest change in temperature is notable when it's used in a thermometer. Suggest Corrections.
In a mercury thermometer, the ice point (lower fixed point) is marked as 10 0 and the steam point (upper fixed point) is marked as 130 0. At 40 0 C temperature, what will this thermometer read? Q.
Mercury thermometer. Because mercury is the only metal that is liquid at room temperature, mercury thermometers are employed in measuring. We also know that Mercury has a high coefficient of expansion, which means it can detect even minor temperature changes. Mercury has a gleaming, colorless texture that is plainly visible to the naked eye.
The alcohol thermometer is an alternative to the mercury-in-glass thermometer and has similar functions. Unlike mercury, alcohol is less toxic and will evaporate away quickly if subjected to high temperatures. Therefore, it is used to measure low temperatures. Suggest Corrections.
