Identify the liquid inside the red circle marked in the following image of an instrument which is used to measure temperature.
A
Water
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B
Kerosene
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C
Mercury
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D
Honey
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Solution
The correct option is C Mercury The image given in the question is of a thermometer. It is used to measure temperature of a substance. It contains mercury (liquid) inside it.
To measure the temperature of a substance, the bulb (lower end) of thermometer is placed on it due to which mercury inside the thermometer rises to certain level and temperature is read from the scale marked besides mercury column.