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QWhich of the following substances is an exception to the rule that solid-state is denser than the liquid and gaseous states of the same substance?

ID: #11642 Solid State MCQs 174 views
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#11642Q ID
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Solid State MCQsTopic
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  • A Mercury ✔ ✖
  • B Carbon dioxide (dry ice) ✔ ✖
  • C Ice ✔ ✖
  • D NaCl ✔ ✖
Correct Answer: Option C

Explanation

Ice is the only substance that has a lower density as a solid than as a liquid. Its density is 0.92 g/cm3 as a solid and 1 g/cm3 as a liquid. Mercury has a density of 14.184 g/cm3 as a solid and 13.69 g/cm3 as a liquid. Carbon dioxide has a density of 1.56 g/cm3 as a solid and 1.10 g/cm3 as a liquid. NaCl has a density of 2.71 g/cm3 as a solid and 1.556 g/cm3 in molten state.

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