water is not used in thermometer 2 reasons
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Explanation:
Water cannot be used in thermometer because of its higher freezing point and lower boiling point than other liquids . If water is used in a thermometer , it will start phase change at 0
o
C and 100
o
C and will not measure temperature , out of this range . This range is very small as compared to other liquids as mercury , having freezing point about −39
o
C and boiling point 356
o
C .
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EXPLANATION:- i) THE MELTING AND BOILING POINT OF WATER IS LOW THAT IS THE MELTING POINT OF WATER COMPARED TO MERCURY IS 0℃ AND BOILING POINT OF WATER IS 100℃.
ii) IT MAKES READING UNEASY BECAUSE IT WILL STICK ON THE WALLS OF THERMOMETER
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