MDCAT
Chemistry
2021
Chemistry · States of Matter - Gases, Liquids and Solids
Work through this past-paper style MCQ, then read the full explanation. Practice more chemistry questions on mMCQ with adaptive practice and topic analytics.
Question
At 0°C what is the physical state of water?
Options
- A
Ice
- B
Liquid
- C
Vapour
- D
Both ice and liquid
Explanation
0 degree C at 1 atm pressure is the freezing point of pure water where its solid-state and liquid state coexist in an equilibrium.
Below 0 degree C, water exists in the form of ice
Between 0 degree and 100 degree C, water exists in the form of liquid
Above 100 degrees C , water exists in the form of vapours
Both water and ice exist in this phase of equilibrium at 0 degree C. Ice and water are in equilibrium at this temperature.
Tagged under Chemistry · States of Matter - Gases, Liquids and Solids · 2021