Advertisements
Advertisements
Question
The following diagrams illustrate three situations involving thermometers which are labeled A, Band C. In each situation the thermometers indicate different readings.
(i) What do you expect the approximate reading of the thermometer B and C would be? Give a reason for your answer.
(ii) How would the readings of A and B help you in calibrating a thermometer?
Advertisements
Solution
(i) The temperature of steam and boiling water Is equal so the reading of thermometer is the same. But due to the addition of salt boiling point of water elevates so the reading of thermometer would be slightly higher than the boiling point of water i.e 100° C.
(ii) The addition of salt boiling point of water increases so thermometer has to measure temperature for a wider range and thus it helps in the calibration of the thermometer.
APPEARS IN
RELATED QUESTIONS
Give reason of Ice floats on water.
Give reason for Sea water does not freeze at 0°C.
What do you mean by the anomalous expansion of water?
Explain the following
A hollow glass sphere which floats with its entire volume submerged in water at 4°C, sinks when water is heated above 4°C.
Explain why do vegetables and fruits get damaged during severe frost?
A deep pond of water has its top layer frozen. What will be the likely temperature of water layer at the bottom of the pond?
In a region with a cold climate the aquatic animals can survive at 4 °C, because _______.
Match the columns:
| Column ‘A’ | Column ‘B’ |
| The density of water is maximum at | (a) 0°C |
| (b) 4°C | |
| (c) 100°C |
