Question

Which of the following reasons makes water as liquid at 1 atmospheric pressure and room temperature?

• A. Boiling point of water is above the room temperature and melting point is below the room temperature
• B. Boiling point of water is below the room temperature and melting point is below the above temperature
• C. Boiling point and melting point both are above the room temperature
• D. Boiling point and melting point both are below the room temperature

Answer 1

The correct option is A Boiling point of water is above the room temperature and melting point is below the room temperature

Melting point of water at 1 atmospheric pressure = 0 ${}^o$C
Boiling point of water at 1 atmospheric pressure = 100 ${}^o$C
Room Temperature is mostly between 10 ${}^o$C to 55 0 ${}^o$C.
The room temperature is always more than the melting point of water.
The room temperature is always less than the boiling point of water.
Therefore it exists as liquid at room temperature.