Two thermometers A and B are dipped in water and alcohol respectively taken in two containers of similar diamensions at room temperature. Compare the temperatures shown by these two thermometers giving appropriate reasons.

Two thermometers A and B are dipped in water and alcohol respectively

1.	Two thermometers A and B are dipped in water and alcohol respectively taken in two containers of similar diamensions at room temperature. Compare the temperatures shown by these two thermometers giving appropriate reasons.
Answer» Solution :The rate of evaporation depends upon the nature of the liquid. In case of ALCOHOL, the SURFACE molecules possess high kinetic energy as a RESULT they easily escape into atmosphere that is the of evaporation is more. As evaporation causes cooling, decrease in temperature in case of alcohol is more. DUE to this reason, a decrease in the level of mercury is OBSERVED in the case observed in the case of container B having alcohol but not in the case of A having water.