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

Name the factors on which evaporation depends.

List any two properties that liquids have in common with gases.

Why does the temperature of a substance remain constant during its melting point or boiling point?

Name the state of matter in which:
$(a)$ Layers of particles can slip and slide over one another easily.
$(b)$ Particles just move around randomly because of very weak force of attraction.

$(a)$ "Evaporation causes cooling." Explain the reason for this effect.
$(b)$ Explain two examples from our daily life where we feel the effect of cooling due to evaporation.