Question
Describe the process and precautions necessary for using a laboratory thermometer.
✓
Answer
The thermometer should be handled carefully, avoiding any impact that could cause breakage. The bulb of the thermometer should be immersed in the liquid of which the temperature is being measured. The bulb of the thermometer should not touch the sides or bottom of the container.
The thermometer must be held vertically. The temperature should be read keeping the eye in line with the level liquid in the thermometer.The reading of the temperature must be taken immediately after the level of liquid in the column of the thermometer stops moving up. Temperature of the liquid may change if we hold on for long, before taking reading.After taking the reading while the thermometer is still immersed, it should be cleaned and stored properly to maintain its accuracy and longevity.
The thermometer must be held vertically. The temperature should be read keeping the eye in line with the level liquid in the thermometer.The reading of the temperature must be taken immediately after the level of liquid in the column of the thermometer stops moving up. Temperature of the liquid may change if we hold on for long, before taking reading.After taking the reading while the thermometer is still immersed, it should be cleaned and stored properly to maintain its accuracy and longevity.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
How can you show that unlike poles attract each other while like poles repel each other?
Write five sentences to conserve water.
Why do rag-pickers always seem to suffer from some disease or the other?
Do you find that all living beings need the same kind of food?
Pick five objects from the word box given as which are opaque and would sink in water.
Boojho kept a magnet close to an ordinary iron bar. He observed that the iron bar attracts a pin as shown in Fig.
What inference could he draw from this observation? Explain.
What inference could he draw from this observation? Explain.
Write the ingredient source of each of the following:
Urad dal, salt, water, spices, sugar.
Urad dal, salt, water, spices, sugar.
Mention two main functions of water for living organisms.
What is the purpose of using an electric switch? Name some electrical gadgets that have switches built into them.
Differentiate among opaque, translucent and transparent materials, giving one example of each.