What is the range of a laboratory thermometer? What precautions do we need to take while using a laboratory thermometer? [3 MARKS]

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Solution

Range: 1 Mark
Precautions: 2 Marks

The range of a laboratory thermometer is -10˚C to 110˚C.

We need to take the following precautions while taking the readings from a laboratory thermometer:
i) It should be kept upright and not tilted while taking the observation.
ii) The bulb should be surrounded on all the sides by the substance of which the temperature is to be measured.
iii) The bulb should not touch the container.

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