A student takes a mixture of sand and ammonium chloride in a china dish and heats it under a funnel fitted with a plug over a flame. He would observe that :<b>(1) </b>solid sand gets deposited on the lower cooler parts of the funnel while solid ammonium chloride remains in the china dish.<b>(2)</b> sand and ammonium chloride get deposited on hotter parts of the funnel.<b>(3)</b> ammonium chloride gets deposited on the cooler parts of the funnel and sand remains in the china dish.<b>(4) </b>sand collects on cooler parts of the funnel while ammonium chloride melts in the china dish.