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| Q. |
The best conductor of heat among the following is – |
| A. | alcohol |
| B. | mercury |
| C. | ether |
| D. | water |
| Answer» B. mercury | |
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Explanation: Since mercury is 13+ times as dense as water, a given volume of mercury would carry about 4.4 times as much heat, so mercury is best conductor of heat among the given options. It is the only metal that is liquid at standard conditions for temperature and pressure. Mercury has one of the narrowest ranges of its liquid state of any metal. |
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