Which of the following statements with reference to Sleet is/are correct? 1. Sleet is frozen raindrops and refrozen melted snow-water 2. It occurs when a layer of air with the temperature below freezing point overlies a warm layer near the ground surface

Statement 1 is correct: sleet is composed of frozen raindrops and refrozen melted snow-water, forming small ice pellets. Statement 2 is incorrect because the condition is reversed: sleet occurs when a layer of air with a temperature ABOVE freezing point (warm layer) lies between two cold layers — that is, snow falls through a warm layer (melting partially) and then refreezes when passing through a cold layer near the ground. So the warm layer is in the middle, with cold layers above and below, not as described in statement 2.