At what temperature does solid ice and liquid water co-exist together (in $0^{\circ} C$)?

Alka was making tea in a kettle. Suddenly she felt intense heat from the puff of steam gushing out of the spout of the kettle. She wondered whether the temperature of the steam was higher than that of the water boiling in the kettle. Comment.

Why does perspiration keep our body cool?

Convert $300 \ K$ into Celsius scale and $-10^{\circ}C$ into Kelvin scale.

Water as ice has a cooling effect,whereas water as steam may cause severe burns. Explain these observations.

How does the melting point of a substance indicate the strength of its intermolecular forces of attraction?