23.Mohan was asked by his teacher to determine the boiling point of a liquid. He set up the apparatus as
shown in the figure. He recorded the boiling point of the liquid as 140°C and reported the reading to
his teacher. The teacher asked him to repeat the experiment after dipping the bulb of the thermomete
in the liquid and also placing the beaker on a tripod stand covered with a wire gauze. After reading
this narration, answer the following questions:
H
Thermometer
Stirrer
Boiling water
Stand
(1) Was the reading taken by the student correct?
(ii) What was the necessity of wire gauze?
(iii) How did teacher help the student?
(iv) What is the value based information associated with this?
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Answer:
He set up the appartus as shown in the figure. He rocorded the boiling point of the liquid as 140∘C and reported the reading to this teacher. The teacher asked him to repeat the experiment after dipping the bulb of the thermometer in the liquid and also placing the beaker on a tripod stand covered with a wire gauze
Explanation:
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