SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Mercury is a metal that is liquid at room temperature and has a density of 13.5 g/cm3. Which of these metals would sink below the mercury if dropped into a container of mercury?
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gold (density=19.3 g/cm3)
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lead (density=11.4 g/cm3)
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iron (density=7.9g/cm3)
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aluminum (density=2.7g/cm3)
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Explanation:
Detailed explanation-1: -A handful of elements are denser than mercury and objects made of these substances will sink into it. Several precious metals–including gold, with a density of 19.3 grams per cubic centimeter, platinum with 21.4, and iridium with 22.65–will sink in a mercury bath.
Detailed explanation-2: -A piece of iron [density 7.6gcm−3] sinks in mercury [density 13.6 gcm−3].
Detailed explanation-3: -If the object density is greater than the density of water then the object will sink or if the density is lower than the water then it will float. However, the density of the object 1g/cm3 1 g / c m 3 is greater than water density 0.997g/cm3 0.997 g / c m 3 . Thus the object will sink.
There is 1 question to complete.