States of matter

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Question 60
Easy

Substance X, a simple molecular compound, is used as a low-temperature heat-transfer fluid. Under standard atmospheric pressure, it is a liquid at −50 ∘C-50\ ^\circ\text{C}−50 ∘C but evaporates to become a gas at room temperature (25 ∘C25\ ^\circ\text{C}25 ∘C).

Which row of the table shows the most likely melting point and boiling point for Substance X?

RowMelting Point (∘C)Boiling Point (∘C)A−3580B−120−78C−115−19D114184 \begin{array}{|c|c|c|} \hline \text{Row} & \text{Melting Point } (^\circ\text{C}) & \text{Boiling Point } (^\circ\text{C}) \\ \hline \text{A} & -35 & 80 \\ \hline \text{B} & -120 & -78 \\ \hline \text{C} & -115 & -19 \\ \hline \text{D} & 114 & 184 \\ \hline \end{array} RowABCD​Melting Point (∘C)−35−120−115114​Boiling Point (∘C)80−78−19184​​

Select the correct row from the options below:

Row A

Row B

Row C

Row D

States of matter Questions

  1. GCSE
  2. /Chemistry
  3. /States of matter