What happens to the temp of the liquid in a cup if water as some of the water evaporates

The temp stays the same. When changing phase the substance always remains at the same temp.

The correct answer is cooling effect is observed.

Explanation:

With the evaporation of some of the water, it can be said that the molecules of water have captivated heat from the environment and the liquid state of water get convert into the vapor state. Thus, a cooling effect is witnessed because the heat of the surrounding molecules has got diminished due to the absorption of the molecules of water. Therefore, there will be a reduction in the temperature and a cooling effect is witnessed.