(a) Factors affecting the rate i. Surface area of the liquid (exposed surface area) ii. Temperature of the liquid iii. Wind/ drought. iv. Humidity/ amount of water vapour v. Nature of the liquid vi. Air pressure (b) Explanation of latent heat; The energy needed to change the state of a substance without a change in temperature. (c)(i) Water in a clay pot cooler than in a rubber container; A clay pot has pores which allows evaporation to occur while a plastic container has no pores. (ii) Pressure cooker cooks faster than ordinary pot; Pressure cooker raises the pressure within it, which raises the temperature to/above the boiling point thus cooks faster. (d)(i) Calculation of latent heat of fusion of the body Ivt = mL mL = 12 x 40 x 1400 = 6.72 x 10\^{5}\)j (ii) Calculation of specific heat capacity of the body C = \(\frac{Ivt}{m \bigtriangleup \theta}\) = \(\frac{12 \times 40 \times 72}{1.5 \times 60}\) = 384 jkg\(^{-1}\) K\(^{-1}\) (e) difference between evaporation and boiling Evaporation Boiling It takes place at the surface of the liquid It occurs throughout the entire volume of the liquid It takes place across all temperatures It takes place at specific temperatures It produces a cooling effect It produces no cooling effect It is wind aided It is not wind aided