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Question
Mercury is often used in laboratory thermometers because it ______.
Options
is a harmless liquid
is silvery in colour and is attractive in appearance
Expands uniformly
is a low cost liquid
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Solution
Mercury is often used in laboratory thermometers because it Expands uniformly
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RELATED QUESTIONS
Heat energy transfer from ______ to ______.
Why do we use Mercury in thermometers? Can water be used instead of mercury? What are the problems in using it?
A clinical thermometer is calibrated from to ______.
Digital thermometers do not use ______.
Mercury is a poor conductor of heat.
Match the following :
| 1. | Mercury | a. | Maximum minimum thermometer |
| 2. | Weather report | b. | -173.15 degree C |
| 3. | 32degree F | c. | Opaque and shining |
| 4. | 100 K | d. | 0 degree C |
We are advised to avoid keeping the clinical thermometer in the sun or near a flame. Why?
Explain how do you determine the temperature of hot water using a laboratory thermometer?
A laboratory thermometer A is kept 7 cm away on the side of the flame while a similar thermometer B is kept 7 cm above the flame of a candle as shown in the following figure.
Which of the thermometers, A or B, will show a greater rise in temperature? Give reason for your answer.
You may have noticed that a few sharp jerks are given to a clinical thermometer before using it. Why is it done so?
