Question

6. Give two reasons to justify-Physical or
(a) water at room temperature is a liquid.
(b) an iron almirah is a solid at room temperature.
7. Why is ice at 273 v​

Answer 1

Answer:

6. Water at room temperature does not have a fixed shape but flows to take the shape of the container. Hence, water at room temperature is a liquid. (b) An iron almirah is a solid at room temperature because its melting point as well as boiling point is above room temperature

7. To achieve the room temperature, the ice at 273 K will absorb latent heat as well as thermal energy. Water at a temperature of 273 K would just absorb heat energy to achieve room temperature. Thus, water at 273 K will absorb less environmental heat energy than ice at 273 K. Therefore ice at 273 K more effective in cooling than water at the same temperature.