iv. Identify solution b. In an experiment to compare thermal conductively of different materials such as iron, lead, aluminum, copper and wood, the diagram below was used. The arrows on the rocks indicate the extent at which the vaseline applied around the material melted when heat is applied Study it carefully and answer the questions that follow. Hot water Vaseline applied on the material T V TU IN 1 i. Identify each of the materials labeled I, II, III, IV and V using the melting level of the vaseline. ii. Which material had the least melting of the vaseline? 2marks iii. Give one reason for your answer in (ii) above 1mark iv. Arrange the materials in order of decreasing conductivity of heat 5 marks v. Mention two modes of heat transfer in this experiment 2 marks​