why mercury used in thermometer?give three reason
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1. It is a good conductor of heat.
2. It is liquid at room temperature.
3. It has high coefficient of expansion.
2. It is liquid at room temperature.
3. It has high coefficient of expansion.
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mercury used in thermometer because
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1)Mercury is the only one in liquid state at room temperature , therefore it can be used so that readings can be taken
2)as Mercury has the highest coefficient of expansion it can show even the slight change in the temperature correctly
3)mercury is a good conductor of heat as it is a metal
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1)Mercury is the only one in liquid state at room temperature , therefore it can be used so that readings can be taken
2)as Mercury has the highest coefficient of expansion it can show even the slight change in the temperature correctly
3)mercury is a good conductor of heat as it is a metal
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