During high fever a wet cloth is kept on the patient forehead . why ?
Food is cooked faster in a pressure cooker than in an open pot, why ?
If heat is supplied to a solid, continuously it melts why?
Mention the boiling point and freezing point of mercury .
Write any two reasons for using mercury in thermometer . or What are the reasons for use of mercury in a thermometer.
Which one of the following contains more amount of heat and which one has higher temperature? Explain with reason.
What is the principle of thermometer? or Write the principle of thermometer.
The boiling temperature of water can not be measured with the help of alcohol thermometer. Why ?
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