describe the construction of the laboratory thermometer?give two precautions to be taken
Answers
Explanation:
The thermometer should not be tilted while measuring the temperature. It should be placed upright. 2. The reading should be taken only when the bulb is surrounded by the substance from all sides.
Answer:
Laboratory thermometer consists of a bulb with long capillarytube. the wall of the bulb made is thinner and the capillary tube is made narrower in order to make the thermometer more sensitive.
Mercury thermometer can be used to measure both hot and cold substances. usually, laboratory thermometer is made in celcius scale ranging from -10degree C to 110degree C. It is used to measure temperature with high accuracy. It is constructed on the basis of mercuery based thermometer.
PRECAUTIONS:
i) It should be kept upright not titled.
ii) the bulb should not touch the surface of the container.